6227020800

Appears in sequences

• a(n) = n! if n is odd otherwise 0 (from the Taylor series for sin x).at n=13A005212
• a(n) = (2*n+1)!.at n=6A009445
• Product of consecutive factorials.at n=24A034882
• a(n) = prime(n)!.at n=5A039716
• Factorials with initial digit '6'.at n=1A045518
• Denominators of coefficients in Taylor series for exp(tan(x)).at n=13A047692
• Denominators of coefficients in function a(x) such that a(a(x)) = arctan(x).at n=6A048604
• Triangle of number of permutations of {1, 2, ..., n} having exactly k cycles, each of which is of length >=r for r=3.at n=26A050211
• Triangle of number of permutations of {1, 2, ..., n} having exactly k cycles, each of which is of length >=r for r=4.at n=18A050212
• Triangle of number of permutations of {1, 2, ..., n} having exactly k cycles, each of which is of length >=r for r=5.at n=13A050213
• E.g.f. (1+x^3-x^4)/(1-x).at n=13A052565
• Expansion of e.g.f. (2 + x)/(1 - x^2).at n=13A052566
• E.g.f. (2+x+x^2)/((1-x)(1+x+x^2)).at n=13A052579
• E.g.f. (1+x^4-x^5)/(1-x).at n=13A052596
• Expansion of E.g.f. x*(1-x)/(1-x-x^3).at n=12A052605
• E.g.f. x^3*(1+2x-2x^2)/(1-x).at n=13A052615
• E.g.f. (2+x+x^2+x^3)/(1-x^4).at n=13A052621
• E.g.f. (1+x^2-2x^3+x^4)/(1-x)^2.at n=12A052624
• Expansion of e.g.f. (2-x-2*x^2)/((1-x)*(1-2*x^2)).at n=13A052636
• E.g.f. x^4*(1+x-x^2)/(1-x).at n=13A052663