193705

Appears in sequences

• Triangle read by rows, T(n, k) = [x^k] (1-x)^(n+1)*Sum_{j=0..n} binomial(n + n*j + j, n*j + j)*x^j.at n=30A108267
• Triangle read by rows, T(n, k) = [x^k] (1-x)^(n+1)*Sum_{j=0..n} binomial(n + n*j + j, n*j + j)*x^j.at n=33A108267
• Column 2 of triangle A108267.at n=5A108268
• Expansion of 1/(-x*sqrt(4*x^2+1)-x^2+1).at n=19A271318