Number of (n+1)X(n+1) 0..2 arrays with all 2X2 subblock sums the same.
A183994
Number of (n+1)X(n+1) 0..2 arrays with all 2X2 subblock sums the same.
Terms
- a(0) =81a(1) =309a(2) =977a(3) =3309a(4) =10449a(5) =35565a(6) =118097a(7) =418461a(8) =1476081a(9) =5460909
External references
- oeis: A183994