OFFSET
0,15
EXAMPLE
a(14) = 2 because we have [11, 3] and [9, 5].
MATHEMATICA
Table[SeriesCoefficient[Product[1 + Boole[Mod[n, k] > 0 && OddQ[k]] x^k, {k, 1, n}], {x, 0, n}], {n, 0, 80}]
CROSSREFS
KEYWORD
nonn
AUTHOR
Ilya Gutkovskiy, Oct 23 2017
STATUS
approved