A028659 Expansion of (theta_3(z)*theta_3(23z) + theta_2(z)*theta_2(23z))^3.

1, 6, 12, 8, 6, 24, 36, 48, 72, 78, 120, 120, 116, 264, 240, 240, 342, 288, 496, 360, 504, 480, 600, 390, 748, 678, 804, 548, 1008, 552, 1200, 840, 1344, 1200, 1440, 1056, 1978, 1368, 1800, 1764, 2040, 1800, 2400, 1848, 2520, 2184, 2364, 1656, 3176, 2406, 2940

Offset

0,2

Links

Jinyuan Wang, Table of n, a(n) for n = 0..1000

Prog

(PARI) a(n) = polcoeff((1 + 2*x*Ser(qfrep([2, 1; 1, 12], n, 1)))^3, n); \\ Jinyuan Wang, Feb 19 2020

Crossrefs

Cf. A028658, A028660, A328093, A328094.

Sequence in context: A236932 A281484 A236931 * A236930 A028643 A236923

Adjacent sequences: A028656 A028657 A028658 * A028660 A028661 A028662

Keyword

nonn

Author

N. J. A. Sloane.

Extensions

More terms from Jinyuan Wang, Feb 19 2020

Status

approved