A138233 - OEIS

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A138233

2^(2*n+1) + 3^(2*n+1).

5, 35, 275, 2315, 20195, 179195, 1602515, 14381675, 129271235, 1162785755, 10462450355, 94151567435, 847322163875, 7625731702715, 68630914235795, 617675543767595, 5559069156490115, 50031579458738075, 450284043329950835 (list; graph; refs; listen; history; internal format)

	OFFSET	`0,1`
	COMMENTS	`Subsequence of A008587; A096951(n) = a(n)/5.`
	FORMULA	`a(n+1) = 4a(n) + 53^(2*n+1), a(0) = 5.` `O.g.f.: -5x(-7+36x)/((-1+4x)(-1+9x)). - R. J. Mathar (mathar(AT)strw.leidenuniv.nl), Apr 24 2008`
	CROSSREFS	`Cf. A138199.` `Sequence in context: A180900 A087630 A084135 * A002294 A051406 A000356` `Adjacent sequences: A138230 A138231 A138232 * A138234 A138235 A138236`
	KEYWORD	`nonn`
	AUTHOR	`Reinhard Zumkeller (reinhard.zumkeller(AT)gmail.com), Mar 07 2008`

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Last modified February 16 02:51 EST 2012. Contains 205860 sequences.