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Search: id:A012148
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A012148 sec(tan(sin(x)))=1+1/2!*x^2+9/4!*x^4+153/6!*x^6+4337/8!*x^8... +0
1
1, 1, 9, 153, 4337, 188049, 11533497, 947095529, 100391885153, 13337306468001, 2164609458010345, 420395208704497849, 96150102074339268945, 25560738902667056074801 (list; graph; listen)
OFFSET

0,3
CROSSREFS

Sequence in context: A113391 A045755 A009037 this_sequence A109677 A024122 A060348

Adjacent sequences: A012145 A012146 A012147 this_sequence A012149 A012150 A012151

KEYWORD

nonn

AUTHOR

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

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Last modified December 2 11:54 EST 2009. Contains 167921 sequences.

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