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A013196 log(sec(x)+arctan(x))=x-3/3!*x^3+16/4!*x^4-27/5!*x^5-48/6!*x^6... 0
1, 0, -3, 16, -27, -48, 777, -5504, 48905, -149120, -4320107, 76593152, -424303635, -2866784256, 77237001761, -1179358298112, 20512289602833, -131744654655488, -6321209675239123, 194063863443816448 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,3

LINKS

Table of n, a(n) for n=0..19.

CROSSREFS

Sequence in context: A091273 A101405 A193367 * A196264 A031080 A013199

Adjacent sequences:  A013193 A013194 A013195 * A013197 A013198 A013199

KEYWORD

sign

AUTHOR

Patrick Demichel (patrick.demichel(AT)hp.com)

STATUS

approved

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Last modified April 19 00:07 EDT 2014. Contains 240735 sequences.