766666666

Appears in sequences

• Numbers k such that k and k^2 use only the digits 1, 5, 6, 7 and 8.at n=33A137060
• Numbers k such that k and k^2 use only the digits 3, 5, 6, 7 and 8.at n=34A137132
• Numbers k such that k and k^2 use only the digits 5, 6, 7 and 8.at n=7A137146
• Numbers k such that k and k^2 use only the digits 5, 6, 7, 8 and 9.at n=29A137147