A028644 Expansion of (theta_3(z)*theta_3(19z) + theta_2(z)*theta_2(19z))^4.

1, 8, 24, 32, 24, 64, 192, 272, 248, 392, 752, 976, 1152, 1648, 2048, 2272, 3128, 4128, 4440, 4648, 6064, 6656, 8128, 8480, 10112, 9416, 13552, 12512, 16384, 15632, 21248, 17856, 26040, 24928, 30768, 28880, 37656, 34864, 42744, 41056, 49040, 48400, 57824, 49872

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, 10], n, 1)))^4, n); \\ Jinyuan Wang, Feb 19 2020

Crossrefs

Cf. A028642, A028643.

Sequence in context: A000118 A096727 A028660 * A227175 A340930 A269420

Adjacent sequences: A028641 A028642 A028643 * A028645 A028646 A028647

Keyword

nonn

Author

N. J. A. Sloane.

Extensions

More terms from Jinyuan Wang, Feb 19 2020

Status

approved