266994

Appears in sequences

• a(n) = n*(n+1)*(n+2)*(2*n^3 + 6*n^2 + 7*n - 3)/36.at n=12A064202
• Number of (w,x,y,z) with all terms in {1,...,n} and w<2x and y>3z.at n=39A212510
• E.g.f. satisfies A(x) = exp( 2 * (exp(x*A(x)^(1/2)) - 1) ).at n=6A375867