OFFSET
0,6
COMMENTS
Conjecture: a(n) > 0 for all n > 57.
FORMULA
G.f.: (Sum_{k>=1} x^A030059(k))^2.
EXAMPLE
a(10) = 3 because we have [7, 3], [5, 5] and [3, 7].
MATHEMATICA
nmax = 100; CoefficientList[Series[(Sum[Boole[MoebiusMu[k] == -1] x^k, {k, 1, nmax}])^2, {x, 0, nmax}], x]
CROSSREFS
KEYWORD
nonn
AUTHOR
Ilya Gutkovskiy, Apr 26 2017
STATUS
approved