oeis2 alternatives and similar packages
Based on the "Math" category.
Alternatively, view oeis2 alternatives based on common mentions on social networks and blogs.
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vector
An efficient implementation of Int-indexed arrays (both mutable and immutable), with a powerful loop optimisation framework . -
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hgeometry
HGeometry is a library for computing with geometric objects in Haskell. It defines basic geometric types and primitives, and it implements some geometric data structures and algorithms. -
dimensional
Dimensional library variant built on Data Kinds, Closed Type Families, TypeNats (GHC 7.8+). -
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numhask
A haskell numeric prelude, providing a clean structure for numbers and operations that combine them. -
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poly
Fast polynomial arithmetic in Haskell (dense and sparse, univariate and multivariate, usual and Laurent) -
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eigen
Haskel binding for Eigen library. Eigen is a C++ template library for linear algebra: matrices, vectors, numerical solvers, and related algorithms. -
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README
oeis2
Haskell interface for Online Encyclopedia of Integer Sequences; homage to oeis.
Difference from oeis
- Source data of OEIS.
: oeis usefmt=text, but this library usefmt=json. - Possible to get all search results.
- Search functions from ID or sub-sequence are merged.
- Possibele to search from other than ID or sub-sequence.
- Support for HTTPS.
Usage
Add import statement.
import Math.OEIS
Get all search results from sub-sequence
If
n == 0, you get all search results.ghci>searchSeq (SubSeq [1,2,3,4]) 0 [OEIS {number = "A000027", ids = ["M0472","N0173"], seqData = [1,2,3,4,5,6,7,... ghci>length it 53Otherwise, you get first
nsearch results.ghci>searchSeq (SubSeq [1,2,3,4]) 17 [OEIS {number = "A000027", ids = ["M0472","N0173"], seqData = [1,2,3,4,5,6,7,8,9, ghci>length it 17
Get first few terms from sub-sequence
ghci>getSeqData (SubSeq [1,2,2,3,3,3,4,4,4,4]) Just [1,2,2,3,3,3,4,4,4,4,5,5,5,5,5,6,6,6,6,6,6,7,7,7,7,7,7,7,...Get Mathematica function from sub-sequence
ghci>mathematica <$> lookupSeq (SubSeq [1,2,2,3,3,3,4,4,4,4]) Just ["a[1] = 1; a[n_] := a[n] = a[n - a[n - 1]] + 1 (* _Branko Curgus_, May 12 2009 *)","Table[n, {n, 13}, {n}] // Flatten (* _Robert G. Wilson v_, May 11 2010 *)"]If no search result
ghci>lookupSeq (ID "1145141919893") Nothing
*Note that all licence references and agreements mentioned in the oeis2 README section above
are relevant to that project's source code only.