id:A059423 - OEIS Search Results

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Number of positive terms in a symmetric determinant of order n.

+0
3

1, 1, 1, 2, 8, 38, 193, 1243, 8971, 77039, 711719, 7557974, 85038784, 1075040038, 14252911927, 208885729397, 3187988600057, 53129157538097, 917244939572929, 17127419083026706, 329981266766790136, 6823452191056396526, 145118585159785011041 (list; graph; listen)

	OFFSET	`0,4`
	REFERENCES	`L. Comtet, Advanced Combinatorics, Reidel, 1974, p. 260, #12, p_n.`
	CROSSREFS	`(A002135+A059422)/2. Cf. A059424.` `Adjacent sequences: A059420 A059421 A059422 this_sequence A059424 A059425 A059426` `Sequence in context: A112738 A123164 A002003 this_sequence A112109 A026939 A047098`
	KEYWORD	`nonn`
	AUTHOR	`njas, Jan 30 2001`

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Last modified October 13 09:05 EDT 2008. Contains 145008 sequences.

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