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A113238
Differences of nonzero tribonacci numbers.
5
0, 1, 2, 3, 5, 6, 9, 11, 12, 17, 20, 22, 23, 31, 37, 40, 42, 43, 57, 68, 74, 77, 79, 80, 105, 125, 136, 142, 145, 147, 148, 193, 230, 250, 261, 267, 270, 272, 273, 355, 423, 460, 480, 491, 497, 500, 502, 503, 653, 778, 846, 883, 903, 914, 920, 923, 925, 926, 1201
OFFSET
1,3
FORMULA
{a(n)} = { A000073(i) - A000073(j) such that i>=j>=2 }.
MATHEMATICA
Union[Flatten[Differences/@Subsets[Drop[LinearRecurrence[{1, 1, 1}, {0, 0, 1}, 16], 2], {2}]]] (* James C. McMahon, Jun 22 2024 *)
CROSSREFS
Cf. A000073, A001590 (subset), A113239 (primes in this sequence).
Sequence in context: A286402 A175007 A284685 * A104214 A349523 A355616
KEYWORD
easy,nonn
AUTHOR
Jonathan Vos Post, Oct 19 2005
STATUS
approved