Column 2 of triangle A113716, in which row n forms a polynomial in y=3*k that generates diagonal n as k=0,1,2,... for n>=0.

A113718

Column 2 of triangle A113716, in which row n forms a polynomial in y=3*k that generates diagonal n as k=0,1,2,... for n>=0.

Terms

    a(0) =1a(1) =7a(2) =61a(3) =601a(4) =6595a(5) =79981a(6) =1065589a(7) =15495415a(8) =244303729a(9) =4150355713a(10) =75565751587

External references