A050942 Numbers that are not the sum of 2 or more consecutive nonzero triangular numbers.

1, 2, 3, 5, 6, 7, 8, 11, 12, 13, 14, 15, 17, 18, 21, 22, 23, 24, 26, 27, 28, 29, 30, 32, 33, 37, 38, 39, 40, 41, 42, 43, 44, 45, 47, 48, 50, 51, 53, 54, 57, 58, 59, 60, 61, 62, 63, 65, 66, 67, 68, 69, 70, 71, 72, 73, 75, 76, 77, 78, 79, 82, 86, 87, 88

Offset

1,2

Comments

In other words, numbers that are not the difference of two non-adjacent tetrahedral numbers (A000292). - Ivan Neretin, Dec 20 2017

Links

Chai Wah Wu, Table of n, a(n) for n = 1..10000

Crossrefs

Cf. A050943.

Sequence in context: A025501 A028758 A028803 * A096600 A122686 A161873

Adjacent sequences: A050939 A050940 A050941 * A050943 A050944 A050945

Keyword

nonn

Author

N. J. A. Sloane, Jan 02 2000

Status

approved