256320

Appears in sequences

• 3rd differences of factorial numbers.at n=6A001565
• Triangle T[n,m]: T[n,-1] = 0; T[0,0] = 0; T[n,0] = n*n!; T[n,m] = T[n,m-1] - T[n-1,m-1].at n=38A061312
• Euler's difference table: triangle read by rows, formed by starting with factorial numbers (A000142) and repeatedly taking differences. T(n,n) = n!, T(n,k) = T(n,k+1) - T(n-1,k).at n=51A068106
• First differences of the rows in the triangle of A116853, starting with 0.at n=51A116854
• Number of permutations p of [n] with p(i) <> i^2.at n=9A187847
• E.g.f. satisfies: A(x) = x + Sum_{n>=1} x^n/n! * d^(n-1)/dx^(n-1) A_n(x), where A_n(x) denotes the n-th iteration of A(x), with A(0)=0.at n=4A193302
• Number of acyclic orientations of the Turán graph T(n,6).at n=9A267386
• Seventh column of Euler's difference table in A068106.at n=8A280920
• a(n) = 288*n^2 - 96*n (n>=1).at n=29A305073
• a(n) is the determinant of the 2 X 2 matrix whose entries (when read by rows) are the n-th primes congruent to 1, 3, 5, 7 mod 8 respectively.at n=41A337145