A122249 - OEIS

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A122249

Numerators of Hankel transform of 1/(2n+1).

1, 4, 256, 65536, 1073741824, 70368744177664, 73786976294838206464, 309485009821345068724781056, 332306998946228968225951765070086144, 1427247692705959881058285969449495136382746624 (list; graph; refs; listen; history; internal format)

	OFFSET	`0,2`
	COMMENTS	`Conjecture - requires proof.`
	FORMULA	`a(n)=4^A122247(n); a(n)=4^sum{k=1..n, sum{j=0..n, floor(k/2^j)}};`
	CROSSREFS	`Sequence in context: A013734 A085534 A071617 * A207275 A206968 A206789` `Adjacent sequences: A122246 A122247 A122248 * A122250 A122251 A122252`
	KEYWORD	`easy,nonn`
	AUTHOR	`Paul Barry (pbarry(AT)wit.ie), Aug 27 2006`

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Last modified February 17 20:50 EST 2012. Contains 206085 sequences.