id:A134661 - OEIS Search Results

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Number of odd coefficients in (1+x+x^3)^n.

+0
1

1, 3, 3, 7, 3, 9, 7, 13, 3, 9, 9, 19, 7, 21, 13, 27, 3, 9, 9, 21, 9, 27, 19, 35, 7, 21, 21, 41, 13, 39, 27, 55, 3, 9, 9, 21, 9, 27, 21, 39, 9, 27, 27, 55, 19, 57, 35, 73, 7, 21, 21, 49, 21, 63, 41, 75, 13, 39, 39, 79, 27, 81, 55, 109, 3, 9, 9, 21, 9, 27, 21, 39, 9, 27, 27, 57, 21, 63, 39 (list; graph; listen)

	OFFSET	`0,2`
	LINKS	`S. Finch, P. Sebah and Z.-Q. Bai, Odd Entries in Pascal's Trinomial Triangle (arXiv:0802.2654)`
	MATHEMATICA	`PolynomialMod[(1+x+x^3)^n, 2] /. x->1`
	CROSSREFS	`Cf. A071053, A038717.` `Adjacent sequences: A134658 A134659 A134660 this_sequence A134662 A134663 A134664` `Sequence in context: A030316 A034257 A092693 this_sequence A135434 A069949 A143275`
	KEYWORD	`nonn`
	AUTHOR	`Steven Finch (Steven.Finch(AT)inria.fr), Jan 25 2008`

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Last modified October 13 20:18 EDT 2008. Contains 145016 sequences.

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