50000005

Appears in sequences

• Numbers k such that k^2 contains only digits {0,2,5}, not ending with zero.at n=25A058425
• a(n) = A069537(n)/2.at n=29A088404
• Numbers k such that k and k^2 use only the digits 0, 2 and 5.at n=28A136910
• Numbers k such that k and k^2 use only the digits 0, 2, 5 and 7.at n=42A136915
• a(n) = n*(n^7 + 1)/2.at n=10A168067