243936

Appears in sequences

• a(n) = n + (n+1)^2 + (n+2)^3 + (n+3)^4.at n=19A027621
• Number of different ways n! can be represented as the difference of two squares; also, for n >= 4, half the number of positive integer divisors of n!/4.at n=25A138196
• Triangle read by rows: T(n,k) = number of vertices of degree k in an origami flip graph OFG(A2n).at n=51A352880