id:A136594 - OEIS Search Results

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Unsigned row sums of triangle A136590.

+0
5

1, 1, 2, 8, 26, 70, 820, 5152, 20316, 388712, 3666188, 17298908, 501805832, 6256792412, 33844737292, 1353617016078, 20960708128068, 137741948419428, 6588092586831028, 121860622573650906, 924837580461274556 (list; graph; listen)

	OFFSET	`0,3`
	COMMENT	`A136590 is the triangle of trinomial logarithmic coefficients.`
	PROGRAM	`(PARI) a(n)=sum(k=0, n, n!/k!abs(polcoeff(log(1+x+x^2 +xO(x^n))^k, n)))`
	CROSSREFS	`Cf. A136590, A136591, A136592, A136593.` `Sequence in context: A100504 A099416 A101696 this_sequence A167826 A097040 A124721` `Adjacent sequences: A136591 A136592 A136593 this_sequence A136595 A136596 A136597`
	KEYWORD	`nonn`
	AUTHOR	`Paul D. Hanna (pauldhanna(AT)juno.com), Jan 10 2008`

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Last modified March 17 15:31 EDT 2010. Contains 173524 sequences.

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