136085041

Properties

Appears in sequences

• Generalized Euler numbers.at n=5A002115
• E.g.f.: (3+2*sqrt(3)*exp(x/2)*sin(sqrt(3)*x/2))/(exp(-x)+2*exp(x/2)*cos(sqrt(3)*x/2)).at n=15A178963
• Generalized Euler numbers. Square array A(n,k), n >= 1, k >= 0, read by antidiagonals. A(n,k) = n-alternating permutations of length n*k.at n=33A181985
• Triangle read by rows, coefficients of generalized Eulerian polynomials F_{3;n}(x).at n=15A292605
• Prime numbersat n=7703273