A012862 - OEIS

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A012862

Numerators of coefficients in Taylor series expansion of arccosh(cosec(x)*arctanh(x)).

1, 7, 211, 87583, 1551091, 26136390307, 26950515152273, 1654341031718587, 6818178632103851, 5017431660958281659233, 191065819328171102145251947, 118321866231849362450533828517, 14214423223280744764724946368993, 9325196363494467475081247926762363 (list; graph; refs; listen; history; text; internal format)

	OFFSET	`0,2`
	LINKS	`Table of n, a(n) for n=0..13.`
	EXAMPLE	`x+7/30x^3+211/1800x^5+87583/1134000x^7+1551091/27216000x^9+...`
	CROSSREFS	`Cf. A202384.` `Sequence in context: A256288 A302107 A061028 * A045760 A046033 A193836` `Adjacent sequences: A012859 A012860 A012861 * A012863 A012864 A012865`
	KEYWORD	`nonn,frac`
	AUTHOR	`Patrick Demichel (patrick.demichel(AT)hp.com)`
	EXTENSIONS	`Corrected by N. J. A. Sloane, Dec 21 2011`
	STATUS	`approved`

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Last modified November 27 00:20 EST 2022. Contains 358362 sequences. (Running on oeis4.)