0,2

a(n)=5*4^n/4-2^n/2+0^n/4; G.f.: (1-2x+2x^2)/((1-2x)(1-4x)); E.g.f.: (5exp(4x)-2exp(2x)+exp(0))/4.

Adjacent sequences: A084210 A084211 A084212 this_sequence A084214 A084215 A084216

Sequence in context: A026560 A037674 A066259 this_sequence A048664 A108012 A017958

easy,nonn

Paul Barry (pbarry(AT)wit.ie), May 19 2003