T(n,k)=Number of nXk 0..2 arrays with no element equal to any value at offset (-1,-1) (-2,0) or (0,-2) and new values introduced in order 0..2.
A274959
T(n,k)=Number of nXk 0..2 arrays with no element equal to any value at offset (-1,-1) (-2,0) or (0,-2) and new values introduced in order 0..2.
Terms
- a(0) =1a(1) =2a(2) =2a(3) =3a(4) =9a(5) =3a(6) =6a(7) =24a(8) =24a(9) =6a(10) =12a(11) =72a(12) =90a(13) =72a(14) =12a(15) =24a(16) =216a(17) =384a(18) =384a(19) =216a(20) =24a(21) =48a(22) =648a(23) =1638a(24) =2376a(25) =1638a(26) =648a(27) =48a(28) =96a(29) =1944
External references
- oeis: A274959