A013128 - OEIS

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A013128

sech(tanh(x)+log(x+1))=1-4/2!*x^2+6/3!*x^3+77/4!*x^4-340/5!*x^5...

1, 0, -4, 6, 77, -340, -3574, 34062, 278337, -5275800, -28795584, 1159543110, 2472700941, -340042014156, 704790251070, 126778070956110, -958235638366239, -57637006798322672, 866891599173180708 (list; graph; refs; listen; history; internal format)

	OFFSET	`0,3`
	CROSSREFS	`Sequence in context: A053489 A012898 A013080 * A012971 A197315 A061216` `Adjacent sequences: A013125 A013126 A013127 * A013129 A013130 A013131`
	KEYWORD	`sign`
	AUTHOR	`Patrick Demichel (dml(AT)hpfrcu03.france.hp.com)`

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Last modified February 15 09:54 EST 2012. Contains 205763 sequences.