id:A165902 - OEIS Search Results

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a(0)=0, a(1)=1, a(n-1)+3^(n-3)*a(n-2)

+0
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0, 1, 1, 2, 5, 23, 158, 2021, 40415, 1513724, 89901329, 10021444493, 1779549303200, 593535825170357, 315835356239140757, 315745107820598835194, 503859317773076207957705, 1510702921925354866376968691 (list; graph; listen)

	OFFSET	`0,4`
	PROGRAM	`(PARI) a(n)=if(n<2, n, a(n-1)+3^(n-3)*a(n-2))`
	CROSSREFS	`Cf. A015460, A165901.` `Sequence in context: A003501 A006990 A032182 this_sequence A167142 A136731 A062495` `Adjacent sequences: A165899 A165900 A165901 this_sequence A165903 A165904 A165905`
	KEYWORD	`nonn`
	AUTHOR	`Jaume Oliver Lafont (joliverlafont(AT)gmail.com), Sep 29 2009`

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

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