625000

Appears in sequences

• Triangle of coefficients in expansion of (1+5x)^n.at n=43A013612
• Numbers of form 5^i*8^j, with i, j >= 0.at n=34A025623
• Numbers of form 5^i*10^j, with i, j >= 0.at n=31A025625
• a(n) = Sum_{k=0..n} (k+1) * T(n,k), with T given by A026374.at n=14A026950
• Substring of both its square and its cube.at n=39A029943
• a(n) = floor(10^7/n).at n=15A033425
• Triangle whose (i,j)-th entry is 5^(i-j)*binomial(i,j).at n=37A038243
• Internal digits of n^2 include digits of n as substring.at n=27A046836
• a(n) = n*5^(n-1).at n=8A053464
• Numbers k such that k^2 has k as its middle digits.at n=8A062118
• Numbers whose sum of exponents is equal to the product of prime factors.at n=16A071174
• Denominator of number J(n) arising in computation of second moment of A*_n lattice.at n=9A079479
• Fourth binomial transform of binomial(n+3, 3).at n=7A081897
• Numbers such that each of the first 2j primes appears exactly once in the prime factorization, either as factor or exponent.at n=12A114132
• Expansion of (1+3*x)/(1-5*x).at n=8A128625
• Sequence identical to its third differences in absolute values.at n=24A138278
• Denominator of Euler(n, 1/5).at n=7A156183
• Totally multiplicative sequence with a(p) = 5*(p+3) for prime p.at n=39A167324
• Numbers of the form p^7*q^3 where p and q are distinct primes.at n=7A179705
• Triangle, read by rows, where T(n,k) = k!*C(n, k)*5^(n-k) for n>=0, k=0..n.at n=37A218016