id:A137704 - OEIS Search Results

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Hankel transform of aerated factorial numbers.

+0
3

1, 1, 1, 2, 8, 96, 3456, 497664, 286654464, 825564856320, 11888133931008000, 1027134771639091200000, 532466665617704878080000000, 1932215036193527461576704000000000 (list; graph; listen)

	OFFSET	`0,4`
	COMMENT	`Hankel transform of A084261. Hankel transform of A000142 (n!) with interpolated zeros.` `a(n+1) is the Hankel transform of A003319 aerated. [From Paul Barry (pbarry(AT)wit.ie), Oct 07 2008]`
	FORMULA	`a(n):=Product{k=0..n, floor((k+2)/2)^(n-k)};`
	CROSSREFS	`Sequence in context: A052713 A136797 A009752 this_sequence A001417 A156926 A001697` `Adjacent sequences: A137701 A137702 A137703 this_sequence A137705 A137706 A137707`
	KEYWORD	`easy,nonn`
	AUTHOR	`Paul Barry (pbarry(AT)wit.ie), Feb 07 2008`

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Last modified November 25 20:09 EST 2009. Contains 167514 sequences.

AT&T Labs Research