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A012862 Numerators of coefficients in Taylor series expansion of arccosh(cosec(x)*arctanh(x)). 1
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
EXAMPLE
x+7/30*x^3+211/1800*x^5+87583/1134000*x^7+1551091/27216000*x^9+...
CROSSREFS
Cf. A202384.
Sequence in context: A256288 A302107 A061028 * A045760 A046033 A193836
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 March 29 11:45 EDT 2024. Contains 371278 sequences. (Running on oeis4.)