5109350400

Appears in sequences

• a(n) = (2*n+8)!!/8!!, related to A000165 (even double factorials).at n=8A051582
• E.g.f. x^4/(1-2x).at n=11A052652
• Expansion of e.g.f. x^3*(1-x)/(1-2*x).at n=11A052671
• Number of integers less than A000108(n) relatively prime to A000108(n).at n=21A062624
• Coefficients of the series S(p, q) for which (-sqrt(p))*S converges to the largest real root of x^3 - p*x + q for 0 < p and 0 < q < 2*(p/3)^(3/2).at n=9A343445
• a(n) = n*(n+2)*(n+4)*(n+6)*(n+8)*(n+10)*(n+12)*(n+14).at n=10A346515