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A028628
Expansion of (theta_3(z)*theta_3(15z) + theta_2(z)*theta_2(15z))^4.
2
1, 8, 24, 32, 40, 144, 304, 288, 408, 1000, 1216, 1344, 2368, 2384, 2976, 5288, 4264, 4656, 8504, 5792, 10032, 11232, 11072, 10176, 20016, 17624, 19056, 25280, 23904, 23184, 46552, 27072, 34968, 46240, 41360, 47136, 67784, 46288, 55776, 74720, 81600, 65232, 104928
OFFSET
0,2
LINKS
PROG
(PARI) a(n) = polcoeff((1 + 2*x*Ser(qfrep([2, 1; 1, 8], n, 1)))^4, n); \\ Jinyuan Wang, Feb 20 2020
CROSSREFS
Sequence in context: A269420 A056196 A044069 * A333427 A128690 A283078
KEYWORD
nonn
EXTENSIONS
More terms from Jinyuan Wang, Feb 20 2020
STATUS
approved