id:A049070 - OEIS Search Results

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(n+1)^2*binomial(2*n+2,n-1)/2.

+0
1

0, 2, 27, 224, 1500, 8910, 49049, 256256, 1288872, 6298500, 30093910, 141210432, 652860520, 2981331990, 13472983125, 60343756800, 268187306640, 1183875281820, 5194996380090, 22676052360000, 98513956031400, 426171522716940, 1836562780483002 (list; graph; listen)

	OFFSET	`0,2`
	CROSSREFS	`Sequence in context: A098627 A051766 A058406 this_sequence A011543 A091709 A083384` `Adjacent sequences: A049067 A049068 A049069 this_sequence A049071 A049072 A049073`
	KEYWORD	`nonn`
	AUTHOR	`N. J. A. Sloane (njas(AT)research.att.com), clm`

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Last modified November 29 12:46 EST 2009. Contains 167659 sequences.

AT&T Labs Research