1640625

Appears in sequences

• Triangle whose (i,j)-th entry is binomial(i,j)*5^(i-j)*5^j.at n=30A038247
• Triangle whose (i,j)-th entry is binomial(i,j)*5^(i-j)*5^j.at n=33A038247
• Triangle T(n, k) = binomial(n, k)*A000166(n-k)*k^n with T(0, 0) = 1, read by rows.at n=33A156788
• Composite integers m such that the sum of the integers x <= m not coprime to m ends with digits of m.at n=3A239245
• Triangle read by rows, T(n,k) = (-1)^(n-k)*C(n,k)*k^n, for n >= 0 and 0 <= k <= n.at n=33A258773
• Number of permutations of n elements divided by the number of quaternary heaps on n+1 elements.at n=36A273732
• A sequence showing denominators in ratios tending to the constant Pi/4 = 0.785398163397448... .at n=3A278364
• Records in A378865.at n=19A379673