T(n,k)=Number of nXk 0..3 arrays with no more than floor(nXk/2) elements equal to at least one horizontal or antidiagonal neighbor, with new values introduced in row major 0..3 order.
A222878
T(n,k)=Number of nXk 0..3 arrays with no more than floor(nXk/2) elements equal to at least one horizontal or antidiagonal neighbor, with new values introduced in row major 0..3 order.
Terms
- a(0) =1a(1) =1a(2) =2a(3) =2a(4) =11a(5) =5a(6) =11a(7) =122a(8) =131a(9) =15a(10) =34a(11) =1814a(12) =6282a(13) =2150a(14) =51a(15) =131a(16) =26311a(17) =409775a(18) =443510a(19) =32491a(20) =187a(21) =438a(22) =399849a(23) =19707855a(24) =95867967a(25) =23794078a(26) =533186a(27) =715a(28) =2150a(29) =6013669
External references
- oeis: A222878