A012968 - OEIS

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A012968

arctanh(atan(x)+log(x+1))=2*x-1/2!*x^2+16/3!*x^3-54/4!*x^4+876/5!*x^5...

2, -1, 16, -54, 876, -6630, 122904, -1558536, 33455520, -601095600, 14941817856, -346714064928, 9916498091808, -280431880000272, 9142107223322304, -303483440198252160, 11161636493381966592 (list; graph; refs; listen; history; internal format)

	OFFSET	`0,1`
	CROSSREFS	`Sequence in context: A013121 A012963 A013120 * A160468 A012889 A013072` `Adjacent sequences: A012965 A012966 A012967 * A012969 A012970 A012971`
	KEYWORD	`sign`
	AUTHOR	`Patrick Demichel (dml(AT)hpfrcu03.france.hp.com)`

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Last modified February 14 13:08 EST 2012. Contains 205623 sequences.