A144507 - OEIS

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A144507

Column 4 of triangle in A144505.

0, 0, 0, 0, 0, 1, 20, 330, 5495, 97405, 1867446, 38849790, 875734035, 21320230140, 558453090910, 15677076200786, 469894617088260, 14985440023696415, 506831098757070010, 18125347345533260190, 683518670893880841921, 27112243165544881804755, 1128576366359460556636770 (list; graph; refs; listen; history; internal format)

	OFFSET	`0,7`
	FORMULA	`a(n) = A001516/6.`
	MAPLE	`f4:=proc(n) local k; add((n+k+4)!/((n-k)!k!2^k), k=0..n); end; [seq(f4(n), n=0..60)]; # uses a different offset`
	CROSSREFS	`Sequence in context: A159648 A078230 A187512 * A084032 A166984 A167031` `Adjacent sequences: A144504 A144505 A144506 * A144508 A144509 A144510`
	KEYWORD	`nonn`
	AUTHOR	`N. J. A. Sloane (njas(AT)research.att.com), Dec 14 2008`

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Last modified February 16 21:51 EST 2012. Contains 205978 sequences.