64377477751
domain: N
Appears in sequences
- Number of n X n binary matrices, symmetric under horizontal reflection, with no more than 2 ones in any 2 X 2 subblock.at n=9A141503
- Number of (n+1)X5 binary arrays with no 2X2 subblock containing fewer than two 1s.at n=7A184202
- Number of (n+1)X9 binary arrays with no 2X2 subblock containing fewer than two 1s.at n=3A184206