1214171

Appears in sequences

• Numbers k such that k and k^2 use only the digits 1, 2, 3, 4 and 7.at n=22A136970
• Numbers k such that k and k^2 use only the digits 1, 2, 4, 5 and 7.at n=24A136989
• Numbers k such that k and k^2 use only the digits 1, 2, 4 and 7.at n=6A136996
• Numbers k such that k and k^2 use only the digits 1, 2, 4, 7 and 8.at n=47A136997
• Numbers k such that k and k^2 use only the digits 1, 2, 4, 7 and 9.at n=30A136998