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A024252
Expansion of tan(x)*tan(tanh(x))/2.
0
0, 1, 4, 24, 1088, 36352, 1283584, 160269312, 11824283648, 1434982481920, 275376204414976, 40808962274623488, 10384927347565395968, 2724691062936548933632, 799682075020079191293952
OFFSET
0,3
MATHEMATICA
Tan[ x ]*Tan[ Tanh[ x ] ]/2 (* Even Part *)
CROSSREFS
KEYWORD
nonn
AUTHOR
EXTENSIONS
Extended and signs tested 03/97.
STATUS
approved