Number of (n+1)X(1+1) 0..2 arrays with the maximum plus the upper median minus the minimum of every 2X2 subblock differing from its horizontal and vertical neighbors by exactly one.
A237504
Number of (n+1)X(1+1) 0..2 arrays with the maximum plus the upper median minus the minimum of every 2X2 subblock differing from its horizontal and vertical neighbors by exactly one.
Terms
- a(0) =81a(1) =328a(2) =1342a(3) =5622a(4) =23545a(5) =97700a(6) =406008a(7) =1690160a(8) =7044600a(9) =29290848a(10) =121938192a(11) =507239832a(12) =2112696916a(13) =8786861808a(14) =36590339088a(15) =152192510432a(16) =633818640688
External references
- oeis: A237504