226233

Appears in sequences

• Lucky numbers that are decimal concatenations of n with n + 7.at n=19A032657
• Number of (n+2)X3 0..1 arrays with every 3X3 subblock having three equal elements in a row horizontally, vertically or nw-to-se diagonally exactly three ways, and new values 0..1 introduced in row major order.at n=19A204374
• Odd numbers k such that rad(k) divides sigma(k).at n=20A336554