oeis

Disco provides a library for interfacing with the Online Encyclopedia of Integer Sequences (OEIS). You can import it with:

import oeis

The library provides two functions:

• The lookupSequence function takes a list of natural numbers and returns the URL of the first result in the OEIS. For example:

  Disco> lookupSequence [1,1,2,3,5,8]
  right("https://oeis.org/A000045")
  

  In this example, the returned URL is in fact the OEIS page for the Fibonacci numbers.

• The extendSequence function tries to extend the given list as far as it can, using data from the first match on the OEIS. Using the same example as before, just by putting in the first few Fibonacci numbers we can get a lot more:

  Disco> extendSequence [1,1,2,3,5,8]
  [1, 1, 2, 3, 5, 8, 13, 21, 34, 55, 89, 144, 233, 377, 610, 987, 1597, 2584, 4181, 6765, 10946, 17711, 28657, 46368, 75025, 121393, 196418, 317811, 514229, 832040, 1346269, 2178309, 3524578, 5702887, 9227465, 14930352, 24157817, 39088169, 63245986, 102334155]