T(n,k)=Number of nXk 0..4 arrays with each element x equal to the number of its horizontal and vertical neighbors equal to 4,1,2,0,3 for x=0,1,2,3,4.
A196967
T(n,k)=Number of nXk 0..4 arrays with each element x equal to the number of its horizontal and vertical neighbors equal to 4,1,2,0,3 for x=0,1,2,3,4.
Terms
- a(0) =1a(1) =2a(2) =2a(3) =3a(4) =6a(5) =3a(6) =4a(7) =15a(8) =15a(9) =4a(10) =6a(11) =48a(12) =101a(13) =48a(14) =6a(15) =9a(16) =145a(17) =562a(18) =562a(19) =145a(20) =9a(21) =13a(22) =449a(23) =3145a(24) =5465a(25) =3145a(26) =449a(27) =13a(28) =19a(29) =1397
External references
- oeis: A196967