640800

Appears in sequences

• Sum of positive even numbers up to n^2.at n=39A235367
• E.g.f. satisfies: A'(x) = (1 + x*A(x))^5 with A(0)=1.at n=7A245247
• Expansion of e.g.f. -LambertW(x^3 * log(1-x))/6.at n=10A355993
• Expansion of e.g.f. (1/x) * Series_Reversion( x*(1 + x^3/6*log(1-x)) ).at n=10A370997