-68337775

Appears in sequences

• Row sums of triangle A129467.at n=8A130031
• a(2n) = (n^2-n-1) + a(2n-2), a(2n+1) = (n^2-n-1)*a(2n-1), with a(0)=0 and a(1)=1.at n=17A154232