A023361 - OEIS

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A023361

Number of compositions into positive triangular numbers.

1, 1, 1, 2, 3, 4, 7, 11, 16, 25, 40, 61, 94, 147, 227, 351, 546, 846, 1309, 2030, 3147, 4876, 7558, 11715, 18154, 28136, 43609, 67586, 104748, 162346, 251610, 389958, 604381, 936699, 1451743, 2249991, 3487153, 5404570, 8376292, 12982016, 20120202 (list; graph; refs; listen; history; internal format)

	OFFSET	`0,4`
	LINKS	`T. D. Noe, Table of n, a(n) for n=0..500`
	FORMULA	`G.f. : 1/(1-x-x^3-x^6-x^10-...) where powers are k(k+1)/2.`
	CROSSREFS	`Sequence in context: A141001 A196382 A120415 * A113435 A025048 A017987` `Adjacent sequences: A023358 A023359 A023360 * A023362 A023363 A023364`
	KEYWORD	`nonn`
	AUTHOR	`David W. Wilson (davidwwilson(AT)comcast.net)`

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Last modified February 16 09:27 EST 2012. Contains 205904 sequences.