A013462 - OEIS

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A013462

exp(arctan(x)-atanh(x))=1-4/3!*x^3+160/6!*x^6-1440/7!*x^7...

1, 0, 0, -4, 0, 0, 160, -1440, 0, -17920, 691200, -7257600, 3942400, -395366400, 14125363200, -175791616000, 295206912000, -24049778688000, 902471385088000, -13090802909184000, 43911376404480000 (list; graph; refs; listen; history; internal format)

	OFFSET	`0,4`
	CROSSREFS	`Sequence in context: A054376 A071608 A013451 * A101453 A128131 A115713` `Adjacent sequences: A013459 A013460 A013461 * A013463 A013464 A013465`
	KEYWORD	`sign`
	AUTHOR	`Patrick Demichel (dml(AT)hpfrcu03.france.hp.com)`

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Last modified February 14 18:05 EST 2012. Contains 205664 sequences.