150047

Appears in sequences

• Composite numbers not divisible by 7 which in base 7 contain their largest proper factor as a substring.at n=13A063877
• Number of n X n binary arrays symmetric about both diagonal and antidiagonal with all ones connected only in a 1000-1000-1111-0010 pattern in any orientation.at n=18A147111
• Expansion of (1+x+x^2) / ((1-x)*(1-x-x^2)).at n=22A154691