id:A113044 - OEIS Search Results

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Number of ways you can split the set of the first n primes into two proper subsets of which the sum of one is thrice the sum of the other.

+0
1

0, 0, 0, 0, 2, 0, 0, 0, 5, 0, 11, 0, 0, 0, 75, 0, 203, 0, 558, 0, 1559, 0, 0, 0, 12786, 0, 37147, 0, 108491, 0, 321551, 0, 964713, 0, 2904950, 0, 8775407, 0, 0, 0 (list; graph; listen)

	OFFSET	`1,5`
	MAPLE	`A113044:=proc(n) local i, j, p, t; t:=0; for j from 2 to n do p:=1; for i to j do p:=p(x^(-3ithprime(i))+x^(ithprime(i))); od; t:=t, coeff(p, x, 0); od; t; end;`
	CROSSREFS	`Cf. A022894.` `Adjacent sequences: A113041 A113042 A113043 this_sequence A113045 A113046 A113047` `Sequence in context: A129183 A110173 A131427 this_sequence A051883 A132792 A136572`
	KEYWORD	`nonn`
	AUTHOR	`Floor van Lamoen (fvlamoen(AT)hotmail.com), Oct 12 2005`

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Last modified October 15 09:18 EDT 2008. Contains 145015 sequences.

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