cp's OEIS Frontend

This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.

A024939 Number of partitions of n into distinct odd primes.

Original entry on oeis.org

1, 0, 0, 1, 0, 1, 0, 1, 1, 0, 1, 1, 1, 1, 1, 1, 2, 1, 2, 2, 2, 2, 2, 3, 3, 2, 3, 3, 3, 4, 3, 5, 4, 4, 5, 5, 6, 6, 5, 7, 7, 7, 8, 8, 9, 8, 9, 11, 11, 10, 12, 12, 13, 14, 14, 16, 15, 16, 17, 19, 20, 20, 20, 22, 24, 23, 26, 27, 27, 28, 30, 33, 34, 34, 36, 37, 40, 41, 43, 46, 46, 47, 50, 55, 56, 56
Offset: 0

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Programs

  • Haskell
    a024939 = p a065091_list where
       p _  0 = 1
       p (k:ks) m = if m < k then 0 else p ks (m - k) + p ks m
    -- Reinhard Zumkeller, Aug 05 2012

Formula

G.f.: Product_{k>1} (1+x^prime(k)).

Extensions

Corrected and extended by Vladeta Jovovic, Jul 20 2003