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.

A241783 Numbers that cannot be partitioned into distinct parts of the form 3^k - 2^k, cf. A001047.

Original entry on oeis.org

2, 3, 4, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 21, 22, 23, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 64, 67, 68, 69, 72, 73, 74, 75, 76, 77
Offset: 1

Views

Author

Reinhard Zumkeller, Apr 28 2014

Keywords

Comments

A241759(a(n)) = 0.

Crossrefs

Cf. A240400 (complement).

Programs

  • Haskell
    a241783 n = a241783_list !! (n-1)
    a241783_list = filter ((== 0) . a241759) [0..]