0,4

Binomial transform of A006668. Second binomial transform of A084150.

a(n)=((3+sqrt(8))^n+(3-sqrt(8))^n-2*3^n)/16; E.g.f.: exp(3x)(sinh(sqrt(2)x))^2/4.

Sequence in context: A098921 A027234 A081574 this_sequence A159235 A085645 A015669

Adjacent sequences: A084148 A084149 A084150 this_sequence A084152 A084153 A084154

easy,nonn

Paul Barry (pbarry(AT)wit.ie), May 16 2003