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A024236 Expansion of ln(1+tan(x).x)/2. +0
2
0, 1, -2, 48, -1040, 62720, -4314624, 498003968, -70081316864, 13529482592256, -3175495421788160, 933402531586899968, -326784893253162369024, 136568449424117316190208, -66517446960602151366164480 (list; graph; listen)
OFFSET

0,3

MATHEMATICA

Log[ 1+Tan[ x ]*x ]/2 (* Even Part *)

CROSSREFS

A009379.

Cf. A101921.

Sequence in context: A005429 A035606 A009670 this_sequence A119703 A012803 A135394

Adjacent sequences: A024233 A024234 A024235 this_sequence A024237 A024238 A024239

KEYWORD

sign

AUTHOR

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

EXTENSIONS

Extended with signs 03/97.

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Last modified September 7 15:23 EDT 2008. Contains 143483 sequences.


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