190233

Appears in sequences

• Number of n X n binary arrays symmetric about both diagonal and antidiagonal with all ones connected only in a 00100-00100-11111-00100 pattern in any orientation.at n=21A147329
• Strongly prime-additive numbers: numbers m with at least 2 distinct prime factors that can be represented as m = Sum_{p|m} p^e_p, with e_p > 0 and p^e_p < m < p^(e_p+1).at n=2A302755