A012255 - OEIS

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A012255

exp(tanh(arcsin(x)))=1+x+1/2!*x^2-3/4!*x^4-4/5!*x^5+21/6!*x^6...

1, 1, 1, 0, -3, -4, 21, 136, 185, 272, 9641, 222016, 1668021, 21267520, 192801597, 3836913536, 42064398961, 874251520256, 10576096455505, 254117293340672, 3476312353756781, 92635637659667456 (list; graph; refs; listen; history; internal format)

	OFFSET	`0,5`
	CROSSREFS	`Sequence in context: A094632 A081698 A012123 * A012247 A057791 A167452` `Adjacent sequences: A012252 A012253 A012254 * A012256 A012257 A012258`
	KEYWORD	`sign`
	AUTHOR	`Patrick Demichel (dml(AT)hpfrcu03.france.hp.com)`

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Last modified February 17 18:31 EST 2012. Contains 206070 sequences.