id:A104872 - OEIS Search Results

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Diagonal sums of a power triangle.

+0
2

1, 0, 1, 1, 2, 3, 6, 12, 27, 64, 163, 441, 1268, 3855, 12344, 41464, 145653, 533736, 2036149, 8071785, 33192790, 141351715, 622384730, 2829417276, 13263528351, 64038928728, 318121600695, 1624347614737, 8517247764136, 45822087138879 (list; graph; listen)

	OFFSET	`0,5`
	COMMENT	`Diagonal sums of A004248.`
	FORMULA	`a(n)=sum{k=0..floor(n/2), k^(n-2k)}`
	CROSSREFS	`Sequence in context: A082395 A061343 A057649 this_sequence A006082 A122889 A158874` `Adjacent sequences: A104869 A104870 A104871 this_sequence A104873 A104874 A104875`
	KEYWORD	`easy,nonn`
	AUTHOR	`Paul Barry (pbarry(AT)wit.ie), Mar 28 2005`

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Last modified December 17 13:29 EST 2009. Contains 170826 sequences.

AT&T Labs Research