0,3

a(n)=A001045(n)*A000129(n).

a(n)=((sqrt(2)+1)^n(2^n-(-1)^n)-(sqrt(2)-1)^n((-2)^n-1))sqrt(2)/12

Sequence in context: A126019 A071237 A006470 this_sequence A000181 A047146 A084187

Adjacent sequences: A084166 A084167 A084168 this_sequence A084170 A084171 A084172

easy,nonn

Paul Barry (pbarry(AT)wit.ie), May 18 2003