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A050942 Numbers that are not the sum of 2 or more consecutive nonzero triangular numbers. 3
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 (list; graph; refs; listen; history; text; internal format)
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

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Last modified December 2 21:48 EST 2020. Contains 338896 sequences. (Running on oeis4.)