id:A085359 - OEIS Search Results

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Third self-convolution of A085357 (residues of binomial(3k,k)/(2k+1) modulo 2).

+0
2

1, 3, 6, 7, 9, 12, 16, 15, 15, 21, 30, 30, 28, 30, 36, 31, 27, 33, 48, 51, 51, 54, 66, 60, 52, 60, 78, 76, 66, 66, 76, 63, 51, 57, 78, 81, 81, 90, 114, 105, 93, 111, 144, 138, 120, 126, 150, 126, 100, 108, 144, 148, 138, 138, 166, 150, 126, 138, 174, 168, 142, 138, 156 (list; graph; listen)

	OFFSET	`0,2`
	COMMENT	`a(n) - A085357(n-1) is always even for n>0.`
	FORMULA	`G.f.: 1 + xA(x) = A085357(x)^3 (Mod 2), where A085357(x)=sum(k>=0, A085357(k)x^k).`
	CROSSREFS	`Cf. A001764 (ternary trees), A085357.` `Sequence in context: A026227 A026232 A061641 this_sequence A087916 A023982 A039591` `Adjacent sequences: A085356 A085357 A085358 this_sequence A085360 A085361 A085362`
	KEYWORD	`nonn`
	AUTHOR	`Paul D. Hanna (pauldhanna(AT)juno.com), Jun 25 2003`

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Last modified December 15 00:47 EST 2009. Contains 170825 sequences.

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