id:A131281 - OEIS Search Results

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E.g.f.: 2*(x-1)*tan(x/2+Pi/4)-x^2+2.

+0
13

0, 0, 0, 2, 6, 18, 70, 310, 1582, 9058, 57678, 403878, 3085478, 25535378, 227589206, 2173314806, 22137209694, 239580726978, 2745392996254, 33207657441094, 422813028038230, 5652593799727858, 79168165551184422, 1159200449070638742, 17711278225214739086 (list; graph; listen)

	OFFSET	`0,4`
	REFERENCES	`Y. Sano, The principal numbers of K. Saito for the types A_l, D_l and E_l, Discr. Math., 307 (2007), 2636-2642.`
	CROSSREFS	`Essentially the same as 2*A034428.` `Sequence in context: A030269 A150082 A060181 this_sequence A022491 A004395 A006388` `Adjacent sequences: A131278 A131279 A131280 this_sequence A131282 A131283 A131284`
	KEYWORD	`nonn`
	AUTHOR	`N. J. A. Sloane (njas(AT)research.att.com), Oct 30 2007`

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Last modified November 25 20:09 EST 2009. Contains 167514 sequences.

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