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A102590 Inverse Boustrophedon transform of 2^n. +0
1
1, 1, 1, 0, -3, -14, -39, -130, -263, -1214, -179, -21810, 98277, -1021214, 8446881, -82814290, 836117617, -9075846014, 103898533141, -1257148371570, 16004750729757, -213975589371614, 2996827456610601, -43880489398997650, 670443584312526697, -10670445866332254014 (list; graph; listen)
OFFSET

0,5

COMMENT

Binomial transform of (-1)^n*A062162.

FORMULA

E.g.f.: exp(2x)/(sec(x)+tan(x))=cos(x)exp(2x)/(1+sin(x))

CROSSREFS

Sequence in context: A162147 A027444 A000263 this_sequence A034130 A005701 A050297

Adjacent sequences: A102587 A102588 A102589 this_sequence A102591 A102592 A102593

KEYWORD

easy,sign

AUTHOR

Paul Barry (pbarry(AT)wit.ie), Jan 22 2005

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Last modified November 25 20:09 EST 2009. Contains 167514 sequences.


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