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A009750 Expansion of tan(x)*tan(tan(x)). +0
2
0, 2, 24, 688, 36992, 3234304, 418499584, 75077748736, 17816420974592, 5399699170000896, 2034070241589854208, 932012713402719797248, 510363278595553899839488, 329128604050609873851777024 (list; graph; listen)
OFFSET

0,2

MATHEMATICA

Tan[ x ]*Tan[ Tan[ x ] ] (* Even Part *)

CROSSREFS

Adjacent sequences: A009747 A009748 A009749 this_sequence A009751 A009752 A009753

Sequence in context: A012118 A012375 A012750 this_sequence A030438 A012723 A069150

KEYWORD

nonn

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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