Number of (n+1)X(4+1) 0..2 arrays with the maximum plus the minimum of every 2X2 subblock differing from its horizontal and vertical neighbors by exactly one.
A237230
Number of (n+1)X(4+1) 0..2 arrays with the maximum plus the minimum of every 2X2 subblock differing from its horizontal and vertical neighbors by exactly one.
Terms
- a(0) =2784a(1) =10888a(2) =29456a(3) =83436a(4) =233536a(5) =671080a(6) =1919288a(7) =5542856a(8) =15833748a(9) =45309424a(10) =129364012a(11) =371396844a(12) =1063000280a(13) =3048786056a(14) =8719902452a(15) =24994666460a(16) =71536549320a(17) =205067864500a(18) =587032939664
External references
- oeis: A237230