id:A034494 - OEIS Search Results

Search: id:A034494

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(7^n+1)/2.

+0
4

1, 4, 25, 172, 1201, 8404, 58825, 411772, 2882401, 20176804, 141237625, 988663372, 6920643601, 48444505204, 339111536425, 2373780754972, 16616465284801, 116315256993604, 814206798955225, 5699447592686572 (list; graph; listen)

	OFFSET	`0,2`
	FORMULA	`E.g.f. exp(4x)cosh(3x). - Paul Barry (pbarry(AT)wit.ie), Apr 20 2003` `a(n) = 7a(n-1) - 3, a(0) = 1.` `G.f.: (1-4x) / (1-x)(1-7x) . - Philippe DELEHAM (kolotoko(AT)wanadoo.fr), Jul 11 2005`
	CROSSREFS	`Sequence in context: A006880 A081068 A140177 this_sequence A084210 A093683 A006348` `Adjacent sequences: A034491 A034492 A034493 this_sequence A034495 A034496 A034497`
	KEYWORD	`nonn`
	AUTHOR	`njas`

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Last modified August 19 23:53 EDT 2008. Contains 142930 sequences.

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