Number of 3 X n 0..3 arrays with no element equal to zero plus the sum of elements to its left or two plus the sum of the elements above it or one plus the sum of the elements diagonally to its northwest, modulo 4.
A239987
Number of 3 X n 0..3 arrays with no element equal to zero plus the sum of elements to its left or two plus the sum of the elements above it or one plus the sum of the elements diagonally to its northwest, modulo 4.
Terms
- a(0) =3a(1) =6a(2) =13a(3) =22a(4) =38a(5) =65a(6) =107a(7) =169a(8) =257a(9) =378a(10) =540a(11) =752a(12) =1024a(13) =1367a(14) =1793a(15) =2315a(16) =2947a(17) =3704a(18) =4602a(19) =5658a(20) =6890a(21) =8317a(22) =9959a(23) =11837a(24) =13973a(25) =16390a(26) =19112a(27) =22164a(28) =25572a(29) =29363
External references
- oeis: A239987