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A280126 Expansion of Product_{k>=1} (1 + x^(prime(k)^2))*(1 + x^(prime(k)^3)). 1

%I #8 Dec 27 2016 13:23:40

%S 1,0,0,0,1,0,0,0,1,1,0,0,1,1,0,0,0,1,0,0,0,1,0,0,0,1,0,1,0,1,0,1,0,1,

%T 1,1,1,1,1,1,1,0,1,0,1,0,1,0,1,1,0,0,1,1,0,0,1,1,1,0,1,2,1,0,1,1,1,0,

%U 0,1,1,0,0,1,1,0,1,0,1,0,1,0,1,1,1,1,1,1,1,1,0,1,0,1,0,1,0,1

%N Expansion of Product_{k>=1} (1 + x^(prime(k)^2))*(1 + x^(prime(k)^3)).

%C Number of partitions of n into distinct parts that are squares of primes (A001248) or cubes of primes (A030078).

%H <a href="/index/Par#partN">Index entries for related partition-counting sequences</a>

%F G.f.: Product_{k>=1} (1 + x^(prime(k)^2))*(1 + x^(prime(k)^3)).

%e a(61) = 2 because we have [49, 8, 4] and [25, 27, 9].

%t nmax = 120; CoefficientList[Series[Product[(1 + x^Prime[k]^2) (1 + x^Prime[k]^3), {k, 1, nmax}], {x, 0, nmax}], x]

%Y Cf. A000586, A001248, A030078, A106244, A111900, A111902, A131799, A168363, A280125.

%K nonn

%O 0,62

%A _Ilya Gutkovskiy_, Dec 26 2016

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