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A009240
Expansion of exp(tan(tan(x))).
3
1, 1, 1, 5, 17, 113, 673, 5669, 48033, 494081, 5387009, 65835109, 871869745, 12394430129, 192177458593, 3124415825605, 55316788832065, 1014225530028161, 20139680768683777, 411568350375102789
OFFSET
0,4
MATHEMATICA
Exp[ Tan[ Tan[ x ] ] ]
CROSSREFS
Sequence in context: A203114 A198027 A216924 * A180387 A324411 A012174
KEYWORD
nonn,easy
AUTHOR
EXTENSIONS
Extended and signs tested Mar 15 1997 by Olivier Gérard.
STATUS
approved