Number of 2 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, modulo 4.
A239650
Number of 2 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, modulo 4.
Terms
- a(0) =4a(1) =20a(2) =92a(3) =418a(4) =1898a(5) =8588a(6) =38888a(7) =175974a(8) =796550a(9) =3604984a(10) =16316908a(11) =73849786a(12) =334252546a(13) =1512838756a(14) =6847231728a(15) =30990953678a(16) =140267248638a(17) =634858320528
External references
- oeis: A239650