71301565

Appears in sequences

• Square array T(n, k) = Product_{j=1..n} ( Sum_{i=0..j-1} ( (k+1)^6 -(k+1)^5 -(k+1)^4 +(k+1)^2 )^i ) with T(n, 0) = n!, read by antidiagonals.at n=18A156889