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A009244 Expansion of exp(tan(x))/cos(x). +0
2
1, 1, 2, 6, 20, 92, 448, 2688, 17296, 127312, 1013600, 8850336, 83547584, 845380928, 9196867072, 105911556096, 1301697829120, 16814357324032, 230093807905280, 3294279618252288, 49636887216382976 (list; graph; listen)
OFFSET

0,3

MATHEMATICA

Exp[ Tan[ x ] ]/Cos[ x ]

CROSSREFS

Adjacent sequences: A009241 A009242 A009243 this_sequence A009245 A009246 A009247

Sequence in context: A027315 A005965 A000421 this_sequence A104985 A079575 A078564

KEYWORD

nonn,easy

AUTHOR

R. H. Hardin (rhh(AT)cadence.com)

EXTENSIONS

Extended and signs tested Mar 15 1997 by Olivier Gerard.

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Last modified October 10 20:39 EDT 2008. Contains 144831 sequences.


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