Number of (n+1)X(4+1) 0..2 arrays with every 2X2 subblock summing to a nonzero multiple of 2.
A251206
Number of (n+1)X(4+1) 0..2 arrays with every 2X2 subblock summing to a nonzero multiple of 2.
Terms
- a(0) =3728a(1) =65040a(2) =1273440a(3) =27920380a(4) =667858580a(5) =16965787428a(6) =447556857260
External references
- oeis: A251206