id:A166725 - OEIS Search Results

Search: id:A166725

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(2n+1)25^n

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1

1, 75, 3125, 109375, 3515625, 107421875, 3173828125, 91552734375, 2593994140625, 72479248046875, 2002716064453125, 54836273193359375, 1490116119384765625, 40233135223388671875, 1080334186553955078125 (list; graph; listen)

	OFFSET	`0,2`
	COMMENT	`Sum_{k>=0} 1/a(k) = (5/2)log(3/2)`
	FORMULA	`G.f.: (1+25x)/(1-25x)^2`
	PROGRAM	`(PARI) a(n)=(2n+1)25^n`
	CROSSREFS	`Cf. (2n+1)4^n A058962, (2n+1)9^n A155988, log(3/2) A016578.` `Sequence in context: A133382 A017791 A017738 this_sequence A075913 A134228 A110902` `Adjacent sequences: A166722 A166723 A166724 this_sequence A166726 A166727 A166728`
	KEYWORD	`nonn`
	AUTHOR	`Jaume Oliver Lafont (joliverlafont(AT)gmail.com), Oct 20 2009`

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

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