175352

Appears in sequences

• a(n) = ceiling((-1)^n*n!*(E(n,2)-E(n,1)*E(n-1,1))) where E(n,x) = Sum_{k=0..n} (-1)^k*x^k/k!.at n=21A065956
• Diagonal sums of number array A082043.at n=22A082045
• G.f.: A(x) = x/(1 - (1-3x)*A( x/(1-3x) )).at n=8A179489
• Number of (n+2) X (6+2) 0..1 arrays with no 3 x 3 subblock diagonal sum 0 and no antidiagonal sum 3 and no row sum 1 and no column sum 1.at n=25A257445
• Number of 8-compositions of n: matrices with 8 rows of nonnegative integers with positive column sums and total element sum n.at n=5A261800