95893domain: NAppears in sequencesa(n) = floor(n*(n-1)*(n-2)*(n-3)/9).at n=32A011919a(n) = Sum_{i=0..n} digsum_7(i)^4, where digsum_7(i) = A053828(i).at n=41A231679a(n) = Sum_{i=0..n} digsum_8(i)^4, where digsum_8(i) = A053829(i).at n=41A231683Triangle read by rows: T(n, k) = e*Gamma(n - k + 1, 1)*binomial(n, k)^2.at n=29A377661