A028650 Expansion of (theta_3(z)*theta_3(21z)+theta_2(z)*theta_2(21z))^2.

1, 0, 4, 0, 4, 0, 0, 0, 4, 0, 8, 8, 0, 16, 0, 8, 4, 16, 4, 16, 8, 0, 16, 24, 0, 16, 40, 0, 0, 16, 16, 16, 4, 16, 40, 8, 4, 16, 32, 0, 8, 16, 4, 32, 16, 0, 64, 16, 0, 0, 60, 8, 40, 48, 0, 48, 0, 16, 56, 48, 16, 48, 64, 0, 4, 64, 32

Offset

0,3

Links

Table of n, a(n) for n=0..66.

Crossrefs

Sequence in context: A086751 A048281 A066273 * A028634 A170773 A028618

Adjacent sequences: A028647 A028648 A028649 * A028651 A028652 A028653

Keyword

nonn

Author

N. J. A. Sloane.

Status

approved