21523365

Appears in sequences

• Polynomial triangle sequence of coefficients: p(x,n)=-((x - 1)^(2*n + 1)/x^n)*Sum[(k + 1)^n*Binomial[k, n]*x^k, {k, 0, Infinity}]. q(x,n)=(p(x,n)+x^n*p(1/x,n))/2.at n=29A155164
• a(n) = n*(n^7 + 1)/2.at n=9A168067