40995

Appears in sequences

• Triangle, read by rows, T(n, k) = binomial(n, k) for n < 2 and binomial(n, k) + 4^(n-1) * binomial(n-2, k-1) otherwise.at n=31A146988
• Triangle, read by rows, T(n, k) = binomial(n, k) for n < 2 and binomial(n, k) + 4^(n-1) * binomial(n-2, k-1) otherwise.at n=32A146988
• G.f. satisfies: A(x) = Sum_{n>=0} x^n * (2*A(x)^n - 1)^n.at n=7A203014