60316

Appears in sequences

• a(n) = 3^n + 4^n + 9^n.at n=5A074551
• Row sums of triangle A129503.at n=44A129504
• Square array A(n,k), n >= 0, k >= 0, read by antidiagonals downwards, where A(n,k) = n! * k! * [x^n * y^k] exp(x+y) / (exp(x) + exp(y) - exp(x+y))^3.at n=40A382673
• a(n) = Sum_{k=0..n} (k!)^2 * binomial(k+2,2) * Stirling2(n+1,k+1)^2.at n=4A382676