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Search: id:A012747
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A012747 cosh(arctanh(x)*cos(x))=1+1/2!*x^2-3/4!*x^4+45/6!*x^6+2457/8!*x^8... +0
1
1, 1, -3, 45, 2457, 161625, 20549397, 3457938757, 772773915313, 221864504883633, 79479234590193325, 34768359140993612893, 18241340561609524790601, 11306811847252896133698825 (list; graph; listen)
OFFSET

0,3
CROSSREFS

Sequence in context: A163002 A117253 A012833 this_sequence A027637 A099168 A004105

Adjacent sequences: A012744 A012745 A012746 this_sequence A012748 A012749 A012750

KEYWORD

sign

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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