id:A067000 - OEIS Search Results

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a(1) = 1; a(n) = Sum (n+k)!a(k)/(2k)!, k = 1..n-1.

+0
2

1, 3, 27, 339, 5553, 112761, 2736099, 77252175, 2488315257, 90053238033, 3617791773723, 159761716507215, 7692231450102849, 401057043646065345, 22510943881422758739, 1353385233080839510335, 86771327488839208390473 (list; graph; listen)

	OFFSET	`1,2`
	CROSSREFS	`Cf. A007683.` `Sequence in context: A127503 A078532 A153853 this_sequence A157089 A138436 A141057` `Adjacent sequences: A066997 A066998 A066999 this_sequence A067001 A067002 A067003`
	KEYWORD	`nonn`
	AUTHOR	`N. J. A. Sloane (njas(AT)research.att.com), Feb 16 2002`

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Last modified November 24 19:42 EST 2009. Contains 167435 sequences.

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