875000
domain: N
Appears in sequences
- Triangle whose (i,j)-th entry is binomial(i,j)*5^(i-j)*8^j.at n=29A038250
- Triangle with T(n,k)=n!*(k-1)^k/k! where 1<=k<=n.at n=33A076482
- Expansion of g.f. (1 + 7*x)/(1 - 50*x^2).at n=7A096882
- Triangle, read by rows, where T(n,k) = k!*C(n, k)*5^(n-k) for n>=0, k=0..n.at n=38A218016
- Numbers n such that n^3 has n as its middle digits.at n=17A227548
- a(0) = a(1) = 1; a(n) = 5 * Sum_{k=0..n-2} a(k) * a(n-k-2).at n=11A354736