A110249 - OEIS

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A110249

Diagonal sums of a Jacobi number triangle.

1, 0, 1, 1, 2, 0, 1, 2, 2, 0, 2, 3, 5, 0, 3, 3, 2, 0, 1, 4, 4, 0, 0, 5, 11, 0, 3, 4, 2, 0, 3, 2, 4, 0, 4, 7, 2, 0, 4, 5, 14, 0, 2, 6, 6, 0, 2, 8, 2, 0, 7, 5, 4, 0, 3, 8, 4, 0, 2, 10, 28, 0, 1, 5, 6, 0, 2, 2, 4, 0, 4, 10, 4, 0, 7, 7, 0, 0, 3, 10, 8, 0, 4, 11, 39, 0, 7, 2, 2, 0, 5, 8, 8, 0, 2, 13, 2, 0, 5, 9, 6 (list; graph; refs; listen; history; internal format)

	OFFSET	`0,5`
	COMMENTS	`Diagonal sums of number triangle A110247.`
	FORMULA	`a(n)=sum{k=0..floor(n/2), Jacobi(k, 2n-4k+1)}`
	CROSSREFS	`Sequence in context: A118401 A147767 A113678 * A160756 A176239 A145462` `Adjacent sequences: A110246 A110247 A110248 * A110250 A110251 A110252`
	KEYWORD	`easy,nonn`
	AUTHOR	`Paul Barry (pbarry(AT)wit.ie), Jul 17 2005`

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Last modified February 14 23:53 EST 2012. Contains 205689 sequences.