T(n,k)=Number of nXk 0..1 arrays with each 1 horizontally, vertically or antidiagonally adjacent to 2 or 4 neighboring 1s.
A296541
T(n,k)=Number of nXk 0..1 arrays with each 1 horizontally, vertically or antidiagonally adjacent to 2 or 4 neighboring 1s.
Terms
- a(0) =1a(1) =1a(2) =1a(3) =1a(4) =3a(5) =1a(6) =1a(7) =5a(8) =5a(9) =1a(10) =1a(11) =8a(12) =16a(13) =8a(14) =1a(15) =1a(16) =15a(17) =37a(18) =37a(19) =15a(20) =1a(21) =1a(22) =26a(23) =96a(24) =126a(25) =96a(26) =26a(27) =1a(28) =1a(29) =45
External references
- oeis: A296541