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..1 nXk array.
A220242
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..1 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) =78a(12) =148a(13) =78a(14) =7a(15) =12a(16) =292a(17) =1131a(18) =1131a(19) =292a(20) =12a(21) =21a(22) =1066a(23) =8127a(24) =14976a(25) =8127a(26) =1066a(27) =21a(28) =37a(29) =3922
External references
- oeis: A220242