123335

Appears in sequences

• Numbers k such that k^2 contains only digits {1,2,5}.at n=20A031153
• Numbers k such that k and k^2 use only the digits 1, 2, 3, 4 and 5.at n=32A136968
• Numbers k such that k and k^2 use only the digits 1, 2, 3 and 5.at n=15A136973
• Numbers k such that k and k^2 use only the digits 1, 2, 3, 5 and 7.at n=25A136975
• Numbers k such that k and k^2 use only the digits 1, 2, 3, 5 and 8.at n=33A136976
• Numbers k such that k and k^2 use only the digits 1, 2, 3, 5 and 9.at n=34A136977
• Numbers k such that the decimal expansions of both k and k^2 have 1 as smallest digit and 5 as largest digit.at n=9A256889
• a(n) is the smallest number which can be represented as the sum of n distinct nonzero fourth powers in exactly 2 ways, or -1 if no such number exists.at n=11A374579