-1769

Appears in sequences

• Row sums of number triangle related to the Jacobsthal numbers.at n=30A110325
• Coefficient triangle sequence of characteristic polynomials of a Fermat like matrix:M(n)=Eulerian n-th matrix: F(n)=M(n).Transpose[M(n)]].at n=11A168242
• Coefficients arising in an asymptotic expansion for the menage numbers.at n=4A260045
• Square array A(n,k), n >= 0, k >= 0, read by antidiagonals, where column k is the expansion of e.g.f.: exp(Product_{j=1..n} (1-x^j) - 1).at n=51A294254
• E.g.f.: exp((1-x)*(1-x^2)*(1-x^3) - 1).at n=6A294256
• Expansion of e.g.f. exp( 1 - 1/(1-2*x)^(1/2) ).at n=6A380308