id:A127137 - OEIS Search Results

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Define an array by Q(m, 0) = 1, Q(m, 1) = 1; Q(m, 2k) = (m - 2k + 1)*Q(m+1, 2k-1) - (2k-1)*Q(m+2, k-2), m*Q(m, 2k+1) = (m - 2k)*Q(m+1, 2k) - 2k(m+1)*Q(m+2, 2k-1). Sequence gives Q(0,n).

+0
8

1, 1, -2, -5, 12, 43, -120, -531, 1680, 8601, -30240, -172965, 665280, 4161555, -17297280, -116658675, 518918400, 3735104625, -17643225600, -134498225925, 670442572800, 5380583766075, -28158588057600, -236759435017875, 1295295050649600, 11364769115001225, -64764752532480000 (list; graph; listen)

	OFFSET	`0,3`
	REFERENCES	`V. van der Noort and N. J. A. Sloane, Paper in preparation, 2007.`
	FORMULA	`See A127080 for e.g.f.`
	CROSSREFS	`A001813 interleaved with A090470.` `See A127080 for the array Q. A column of A127080.` `Sequence in context: A005664 A009739 A062272 this_sequence A071787 A067578 A109139` `Adjacent sequences: A127134 A127135 A127136 this_sequence A127138 A127139 A127140`
	KEYWORD	`sign`
	AUTHOR	`njas, Mar 24 2007`

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Last modified September 6 00:03 EDT 2008. Contains 143485 sequences.

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