id:A052144 - OEIS Search Results

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A000172(n)^2.

+0
2

1, 4, 100, 3136, 119716, 5071504, 230553856, 11016601600, 546360462244, 27888242788624, 1456587070867600, 77515424509446400, 4189899499315360000, 229472379264509977600, 12709952101698593689600, 710863065714510068187136 (list; graph; listen)

	OFFSET	`0,2`
	REFERENCES	`R. P. Stanley, Enumerative Combinatorics, Cambridge, Vol. 2, 1999; see page 191.`
	CROSSREFS	`Sequence in context: A091268 A017090 A029995 this_sequence A127776 A059105 A129435` `Adjacent sequences: A052141 A052142 A052143 this_sequence A052145 A052146 A052147`
	KEYWORD	`nonn`
	AUTHOR	`N. J. A. Sloane (njas(AT)research.att.com), Jan 23 2000`

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Last modified December 6 22:55 EST 2009. Contains 170429 sequences.

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