0,2

Hankel transform of A100095(n+1).

G.f.: (1+4x)/(1+4x^2); a(n)=2^n*(cos(pi*n/2)+2*sin(pi*n/2)).

Cf. A141124.

Sequence in context: A075882 A125757 A056450 this_sequence A164111 A164906 A129884

Adjacent sequences: A141122 A141123 A141124 this_sequence A141126 A141127 A141128

easy,sign

Paul Barry (pbarry(AT)wit.ie), Jun 05 2008