122820
domain: N
Appears in sequences
- a(n) = A051717(2n) + A051717(2n+1).at n=44A140812
- Number of (n+1)X4 binary arrays with every 2X2 subblock determinant equal to exactly one or two horizontal and vertical neighbor 2X2 subblock determinants.at n=7A186896
- Number of (n+1)X9 binary arrays with every 2X2 subblock determinant equal to exactly one or two horizontal and vertical neighbor 2X2 subblock determinants.at n=2A186901