A028611 Expansion of (theta_3(z)*theta_3(11z) + theta_2(z)*theta_2(11z))^3.

1, 6, 12, 20, 54, 84, 120, 192, 204, 346, 312, 414, 380, 672, 480, 880, 726, 1152, 1092, 1440, 1116, 1920, 1332, 1860, 2040, 2106, 1680, 2640, 2496, 3360, 3120, 3108, 3276, 4580, 2880, 4992, 4114, 4500, 3600, 6720, 5304, 6720, 4800, 7392, 5646, 7844, 6360, 7500

Offset: 0

Author

N. J. A. Sloane

Keywords

• nonn

Links

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

Crossrefs

Cf. A028609, A028610, A028612.

Programs

PARI

a(n) = polcoeff((1 + 2*x*Ser(qfrep([2, 1; 1, 6], n, 1)))^3, n); \\ Jinyuan Wang, Feb 20 2020

Extensions

More terms from Jinyuan Wang, Feb 20 2020