id:A082384 - OEIS Search Results

Search: id:A082384

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

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1, 6, 5, 22, 13, 74, 29, 262, 69, 986, 197, 3846, 669, 15242, 2509, 60774, 9813, 242842, 38965, 971046, 155501, 3883786, 621565, 15534662, 2485733, 62138074, 9942309, 248551622, 39768509, 994205706, 159073197, 3976821926, 636291829 (list; graph; listen)

	OFFSET	`0,2`
	FORMULA	`a(2n)=(1/27)(254^n+36n^2+24n+2); a(2n+1)=(1/27)(44^n+36n^2+60n+23)`
	PROGRAM	`(PARI) a(n)=if(n<1, 1, 2^n+n^2-2*a(n-1))`
	CROSSREFS	`Sequence in context: A101493 A039668 A143130 this_sequence A070399 A137763 A029763` `Adjacent sequences: A082381 A082382 A082383 this_sequence A082385 A082386 A082387`
	KEYWORD	`nonn`
	AUTHOR	`Benoit Cloitre (benoit7848c(AT)orange.fr), Apr 13 2003`

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Last modified December 9 14:43 EST 2009. Contains 170430 sequences.

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