A292464 a(n) = A292136(n)^2 + A292137(n)^2.

1, 1, 2, 1, 1, 1, 5, 5, 4, 4, 4, 10, 13, 13, 13, 20, 37, 37, 29, 40, 65, 72, 74, 89, 125, 178, 196, 200, 234, 325, 410, 394, 421, 617, 772, 829, 905, 1125, 1445, 1625, 1700, 2045, 2650, 3077, 3293, 3698, 4658, 5540, 5941, 6605, 7880, 9553, 10817, 11785, 13625

Offset

0,3

Links

Seiichi Manyama, Table of n, a(n) for n = 0..1000

Formula

a(n) = A292136(n)^2 + A292138(n)^2.

a(n) = (A278401(n)^2 + A278402(n)^2)/2.

Mathematica

Abs[CoefficientList[Series[1/QPochhammer[I*x, x], {x, 0, 100}], x]]^2 (* Vaclav Kotesovec, Sep 17 2017 *)

Crossrefs

Cf. A278401, A278402, A278420, A292136, A292137, A292138.

Sequence in context: A121395 A275377 A219585 * A090628 A054387 A199958

Adjacent sequences: A292461 A292462 A292463 * A292465 A292466 A292467

Keyword

nonn

Author

Seiichi Manyama, Sep 17 2017

Status

approved