Number of 4Xn arrays containing n copies of 0..4-1 with no element 1 greater than its west, northeast or northwest neighbor modulo 4 and the upper left element equal to 0.
A266996
Number of 4Xn arrays containing n copies of 0..4-1 with no element 1 greater than its west, northeast or northwest neighbor modulo 4 and the upper left element equal to 0.
Terms
- a(0) =6a(1) =23a(2) =126a(3) =943a(4) =8360a(5) =87289a(6) =1073932a(7) =14863289a(8) =227066403a(9) =3688250645a(10) =62544807055
External references
- oeis: A266996