273235

Appears in sequences

• Number of n X n binary arrays with all ones connected only in a 0100-0100-1111-0010 pattern in any orientation.at n=8A147027
• Number of n X n binary arrays symmetric under horizontal and vertical reflection with all ones connected only in a 0100-0100-1111-0010 pattern in any orientation.at n=18A147029
• Number of n X n binary arrays symmetric under horizontal and vertical reflection with all ones connected only in a 0100-0100-1111-0010 pattern in any orientation.at n=19A147029
• Self-convolution of Sum(binomial(2*n, i), i=0..n).at n=8A240879