Number of (n+1) X (1+1) 0..2 arrays with every 2 X 2 subblock summing to a nonzero multiple of 2.
A251203
Number of (n+1) X (1+1) 0..2 arrays with every 2 X 2 subblock summing to a nonzero multiple of 2.
Terms
- a(0) =40a(1) =180a(2) =816a(3) =3728a(4) =17152a(5) =79424a(6) =369920a(7) =1731840a(8) =8144896a(9) =38458368a(10) =182218752a(11) =865931264a(12) =4125491200a(13) =19697254400a(14) =94217240576a(15) =451363012608
External references
- oeis: A251203