646479

Appears in sequences

• Number of n X n binary arrays symmetric about both diagonal and antidiagonal with all ones connected only in a 1001-1111 pattern in any orientation.at n=19A146622
• Numbers n such that the union of the decimal digits of n^2 and n^3 contains every decimal digit exactly three times.at n=6A174823
• Numbers N such that in the concatenation of N^2 and N^3, each of the 10 decimal digits appears equally often.at n=8A363927