A073472 Trisection of A007294.

1, 2, 4, 7, 11, 17, 25, 36, 50, 68, 92, 121, 159, 205, 262, 332, 417, 520, 645, 793, 971, 1180, 1430, 1722, 2065, 2467, 2934, 3478, 4109, 4835, 5676, 6638, 7747, 9013, 10459, 12108, 13980, 16110, 18522, 21247, 24333, 27800, 31715, 36106, 41039, 46567

Offset: 0

Author

Randall L Rathbun, Aug 26 2002

Keywords

• nonn

Crossrefs

Cf. A007294, A073471, A073470.

Programs

Magma

function a007294(n, k) return n gt k*(k+1)/2 select a007294(n-k*(k+1)/2, k) + a007294(n, k+1) else n eq k*(k+1)/2 select 1 else 0; end function; [ a007294(n, 2): n in [2..137 by 3] ]; // Klaus Brockhaus, Jan 23 2009

Extensions

More terms from Klaus Brockhaus, Jan 23 2009