A110129 - OEIS

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A110129

Central coefficients of a scaled Legendre triangle.

1, 2, 22, 504, 16966, 752800, 41492284, 2734083968, 209681631814, 18348172005888, 1804161160185748, 196945525458761728, 23633625832975567644, 3092337510752711057408, 438161926888980929318584 (list; graph; refs; listen; history; internal format)

	OFFSET	`0,2`
	COMMENTS	`Central coefficients of triangle A110124.`
	FORMULA	`a(n)=2^nLegendreP(n, n); a(n)=sum{j=0..floor(n/2), (-1)^jC(n, j)C(2n-2j, n)n^(n-2j).`
	CROSSREFS	`Sequence in context: A137076 A090730 A090313 * A120419 A177042 A132568` `Adjacent sequences: A110126 A110127 A110128 * A110130 A110131 A110132`
	KEYWORD	`easy,nonn`
	AUTHOR	`Paul Barry (pbarry(AT)wit.ie), Jul 13 2005`

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Last modified February 15 23:53 EST 2012. Contains 205860 sequences.