57242

Appears in sequences

• Numbers k such that k * (k+5) gives the concatenation of two numbers m and m+5.at n=3A116324
• Numbers n such that the decimal expansions of both n and n^2 have 2 as smallest digit and 7 as largest digit.at n=24A257123
• Expansion of Product_{k>=0} 1 / (1 - x^(3^k))^3.at n=33A374627