id:A019525 - OEIS Search Results

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A019525

Poincare series for depths of roots in a certain root system.

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2, 3, 6, 12, 27, 60, 138, 315, 726, 1668, 3843, 8844, 20370, 46899, 108006, 248700, 572715, 1318812, 3036954, 6993387, 16104246, 37084404, 85397139, 196650348, 452841762, 1042792803, 2401318086, 5529696492, 12733650747, 29322740220 (list; graph; listen)

	OFFSET	`1,1`
	REFERENCES	`Posting to sci.math.research by dima(AT)win.tue.nl (Dmitrii V. Pasechnik), Oct 28 1996.`
	FORMULA	`a(n)=2a(n-1)+2a(n-2)-3a(n-3).`
	CROSSREFS	`Adjacent sequences: A019522 A019523 A019524 this_sequence A019526 A019527 A019528` `Sequence in context: A086625 A001677 A024422 this_sequence A108915 A082395 A061343`
	KEYWORD	`nonn`
	AUTHOR	`Robert G. Wilson v (rgwv(AT)rgwv.com)`

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Last modified October 7 08:31 EDT 2008. Contains 144667 sequences.

AT&T Labs Research