A051406 - OEIS

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A051406

(3^n+1)*(3^(n+1)+1)/8.

1, 5, 35, 287, 2501, 22265, 199655, 1794707, 16145801, 145292525, 1307573675, 11767985927, 105911341901, 953200482785, 8578799562095, 77209181709947, 694882592342801, 6253943201945045, 56285488430084915, 506569394708502767 (list; graph; refs; listen; history; internal format)

	OFFSET	`0,2`
	FORMULA	`a(n)= 13a(n-1) -39a(n-2) +27a(n-3) .G.f.: -(1-8x+9x^2)/((x-1)(3x-1)(9*x-1)). [From R. J. Mathar (mathar(AT)strw.leidenuniv.nl), Jul 25 2009]`
	CROSSREFS	`Sequence in context: A084135 A138233 A002294 * A000356 A027392 A177354` `Adjacent sequences: A051403 A051404 A051405 * A051407 A051408 A051409`
	KEYWORD	`nonn`
	AUTHOR	`clm`

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Last modified February 16 03:44 EST 2012. Contains 205860 sequences.