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Search: id:A013113
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A013113 sec(arcsinh(x)+arctan(x))=1+4/2!*x^2+56/4!*x^4+1990/6!*x^6... +0
1
1, 4, 56, 1990, 130280, 13814650, 2137954100, 457685029750, 128915903246000, 46370152422675250, 20689120752785127500, 11232151174947132868750, 7281395066161326989645000, 5560840304175437693730906250 (list; graph; listen)
OFFSET

0,2
CROSSREFS

Sequence in context: A013055 A012983 A012959 this_sequence A009105 A091797 A007726

Adjacent sequences: A013110 A013111 A013112 this_sequence A013114 A013115 A013116

KEYWORD

nonn

AUTHOR

Patrick Demichel (dml(AT)hpfrcu03.france.hp.com)

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Last modified December 17 23:40 EST 2009. Contains 171025 sequences.

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