T(n,k)=Number of nXk 0..2 arrays with no element equal to more than one of its king-move neighbors, with the exception of exactly two elements, and with new values introduced in order 0 sequentially upwards.
A281540
T(n,k)=Number of nXk 0..2 arrays with no element equal to more than one of its king-move neighbors, with the exception of exactly two elements, and with new values introduced in order 0 sequentially upwards.
Terms
- a(0) =0a(1) =0a(2) =0a(3) =0a(4) =0a(5) =0a(6) =1a(7) =4a(8) =4a(9) =1a(10) =2a(11) =104a(12) =290a(13) =104a(14) =2a(15) =9a(16) =612a(17) =2919a(18) =2919a(19) =612a(20) =9a(21) =34a(22) =3056a(23) =14561a(24) =15624a(25) =14561a(26) =3056a(27) =34a(28) =124a(29) =16368
External references
- oeis: A281540