912129

Appears in sequences

• Numbers of the concatenated form 9nn9.at n=12A102484
• Number of (n+4)X5 binary arrays with every 5X5 subblock commuting with each horizontal and vertical neighbor 5X5 subblock.at n=7A186601
• Number of (n+4)X12 binary arrays with every 5X5 subblock commuting with each horizontal and vertical neighbor 5X5 subblock.at n=0A186608
• T(n,k)=Number of (n+4)X(k+4) binary arrays with every 5X5 subblock commuting with each horizontal and vertical neighbor 5X5 subblock.at n=28A186609