id:A014938 - OEIS Search Results

Search: id:A014938

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a(1)=1, a(n)=n*21^(n-1)+a(n-1).

+0
1

1, 43, 1366, 38410, 1010815, 25515421, 625878268, 15034586596, 355440320845, 8298240786655, 191776931546866, 4395106938053518, 100020864586079851, 2262634152933752305, 50921433140756382520, 1140878530467983299336 (list; graph; listen)

	OFFSET	`1,2`
	FORMULA	`a(n)=(1/400)[1+21^n(20*n-1)], with n>=0 [From Paolo P. Lava (ppl(AT)spl.at), Jan 13 2009]`
	CROSSREFS	`Sequence in context: A010959 A010995 A122575 this_sequence A022220 A009987 A076572` `Adjacent sequences: A014935 A014936 A014937 this_sequence A014939 A014940 A014941`
	KEYWORD	`nonn,easy`
	AUTHOR	`Olivier Gerard (olivier.gerard(AT)gmail.com)`

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

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