Number of (n+1) X (1+1) 0..2 arrays with the maximum plus the minimum of every 2 X 2 subblock differing from its horizontal and vertical neighbors by exactly one.
A237227
Number of (n+1) X (1+1) 0..2 arrays with the maximum plus the minimum of every 2 X 2 subblock differing from its horizontal and vertical neighbors by exactly one.
Terms
- a(0) =81a(1) =268a(2) =928a(3) =2784a(4) =9628a(5) =28912a(6) =100008a(7) =300256a(8) =1038560a(9) =3118208a(10) =10785696a(11) =32383104a(12) =112011072a(13) =336303872a(14) =1163253760a(15) =3492571136a(16) =12080581376a(17) =36270926848a(18) =125458829824a(19) =376679553024
External references
- oeis: A237227