202002

Appears in sequences

• Numbers k such that k^2 contains only digits {0,4,8}, not ending with zero.at n=14A058441
• Numbers k such that k and k^2 use only the digits 0, 2, 3, 4 and 8.at n=47A136885
• Numbers k such that k and k^2 use only the digits 0, 2, 4, 6 and 8.at n=52A136904
• Numbers k such that k and k^2 use only the digits 0, 2, 4 and 8.at n=30A136908
• Numbers k such that k^2 has only digits 0, 4 and 8.at n=34A202170