T(n,k)=Equals two maps: number of nXk binary arrays indicating the locations of corresponding elements equal to exactly two of their horizontal and vertical neighbors in a random 0..3 nXk array.
A220430
T(n,k)=Equals two maps: number of nXk binary arrays indicating the locations of corresponding elements equal to exactly two of their horizontal and vertical neighbors in a random 0..3 nXk array.
Terms
- a(0) =1a(1) =1a(2) =1a(3) =2a(4) =6a(5) =2a(6) =4a(7) =23a(8) =23a(9) =4a(10) =7a(11) =94a(12) =236a(13) =94a(14) =7a(15) =12a(16) =380a(17) =2103a(18) =2103a(19) =380a(20) =12a(21) =21a(22) =1494a(23) =18366a(24) =40412a(25) =18366a(26) =1494a(27) =21a(28) =37a(29) =5939
External references
- oeis: A220430