The goal of oeis is to provide access to integer sequences from http://oeis.org and some to include some helper functions to ease analysis on the sequences.
You can install the development version with:
install.packages("remotes")
remotes::install_github("jpmarindiaz/oeis")
List all available sequences with sequences
library(oeis)
head(sequences)
#> sequence
#> 1 A000001
#> 2 A000002
#> 3 A000003
#> 4 A000004
#> 5 A000005
#> 6 A000006
#> description
#> 1 Number of groups of order n.
#> 2 Kolakoski sequence: a(n) is length of n-th run; a(1) = 1; sequence consists just of 1's and 2's.
#> 3 Number of classes of primitive positive definite binary quadratic forms of discriminant D = -4n; or equivalently the class number of the quadratic order of discriminant D = -4n.
#> 4 The zero sequence.
#> 5 d(n) (also called tau(n) or sigma_0(n)), the number of divisors of n.
#> 6 Integer part of square root of n-th prime.Search for a sequence by some term in the sequence description.
search_sequence("prime numbers")
# Returns 973 sequences with "prime numbers" in the description
Download a sequence
a1 <- get_sequence("A306302")
a2 <- get_sequence("A331766")
#a3 <- get_sequence("A999999") # Error. Sequence not in catalog.TODO Work in progress!
# Fit polynomials
# Find best polynomial order