id:A048509 - OEIS Search Results

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a(n)=T(4,n), array T given by A048505.

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1, 26, 87, 233, 577, 1377, 3217, 7409, 16881, 38129, 85489, 190449, 421873, 929777, 2039793, 4456433, 9699313, 21037041, 45481969, 98041841, 210763761, 451936241, 966787057, 2063597553, 4395630577, 9344909297, 19830669297 (list; graph; listen)

	OFFSET	`0,2`
	FORMULA	`(n^2+17n+64) * 2^(n-2) - 15. - Ralf Stephan, Feb 05 2004`
	CROSSREFS	`n-th difference of a(n), a(n-1), ..., a(0) is (25, 36, 49, 64, 81...).` `Adjacent sequences: A048506 A048507 A048508 this_sequence A048510 A048511 A048512` `Sequence in context: A042332 A138081 A118543 this_sequence A044213 A044594 A038654`
	KEYWORD	`nonn`
	AUTHOR	`Clark Kimberling (ck6(AT)evansville.edu)`

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Last modified October 9 14:06 EDT 2008. Contains 144831 sequences.

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