Half the number of n X n toroidal binary arrays with each element having the sum of its vertical neighbors equal to the sum of its horizontal neighbors.
A184096
Half the number of n X n toroidal binary arrays with each element having the sum of its vertical neighbors equal to the sum of its horizontal neighbors.
Terms
- a(0) =1a(1) =2a(2) =7a(3) =18a(4) =31a(5) =98a(6) =127a(7) =450a(8) =511a(9) =1922a(10) =2047a(11) =7938a(12) =8191a(13) =32258a(14) =32767a(15) =130050a(16) =131071a(17) =522242a(18) =524287a(19) =2093058
External references
- oeis: A184096