Number of (n+1)X(2+1) 0..3 arrays with the sum of all four elements of every 2X2 subblock equal.
A237009
Number of (n+1)X(2+1) 0..3 arrays with the sum of all four elements of every 2X2 subblock equal.
Terms
- a(0) =704a(1) =1632a(2) =3928a(3) =10776a(4) =30248a(5) =92328a(6) =286168a(7) =938568a(8) =3112424a(9) =10749192a(10) =37426648a(11) =134315976a(12) =484881128a(13) =1790797128a(14) =6641272408a(15) =25056319368a(16) =94795789544a(17) =363296575752
External references
- oeis: A237009