A111582 - OEIS

A111582

G.f.: A(x) = ( G(x)^3 - G(x^3) - 3*x*(1+x)/(1-x^3) )/(9*x^2) where G(x) is the g.f. of A110628.

1, 3, 6, 11, 16, 22, 28, 33, 41, 51, 61, 76, 93, 107, 125, 144, 159, 178, 200, 215, 233, 256, 271, 288, 314, 332, 349, 377, 391, 407, 435, 450, 466, 497, 517, 538, 574, 595, 619, 653, 679, 705, 750, 784, 816, 859, 888, 919, 961, 1002, 1039, 1102, 1145, 1186

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OFFSET

0,2

COMMENTS

A110628 is the trisection of A083953; surprisingly, the self-convolution cube of A110628 is congruent modulo 9 to A083953, which consists entirely of 1's, 2's and 3's.

LINKS

Table of n, a(n) for n=0..53.

CROSSREFS

Cf. A110628, A083953.

Sequence in context: A310112 A310113 A310114 * A366471 A024401 A333709

Adjacent sequences: A111579 A111580 A111581 * A111583 A111584 A111585

KEYWORD

nonn

AUTHOR

Paul D. Hanna, Aug 28 2005

STATUS

approved