T(n,k)=Equals two maps: number of nXk binary arrays indicating the locations of corresponding elements equal to exactly two of their horizontal, vertical and antidiagonal neighbors in a random 0..2 nXk array.
A221188
T(n,k)=Equals two maps: number of nXk binary arrays indicating the locations of corresponding elements equal to exactly two of their horizontal, vertical and antidiagonal neighbors in a random 0..2 nXk array.
Terms
- a(0) =1a(1) =1a(2) =1a(3) =2a(4) =6a(5) =2a(6) =4a(7) =27a(8) =27a(9) =4a(10) =7a(11) =107a(12) =274a(13) =107a(14) =7a(15) =12a(16) =461a(17) =2648a(18) =2648a(19) =461a(20) =12a(21) =21a(22) =1844a(23) =23765a(24) =51924a(25) =23765a(26) =1844a(27) =21a(28) =37a(29) =7502
External references
- oeis: A221188