Number of (n+1)X(3+1) 0..2 arrays colored with the upper median plus the lower median minus the minimum of every 2X2 subblock.
A237680
Number of (n+1)X(3+1) 0..2 arrays colored with the upper median plus the lower median minus the minimum of every 2X2 subblock.
Terms
- a(0) =2741a(1) =35620a(2) =449258a(3) =5732688a(4) =74265677a(5) =959069036a(6) =12309130146a(7) =158172430796
External references
- oeis: A237680