Number of (n+1) X (2+1) 0..1 arrays with no element greater than all horizontal neighbors or less than all vertical neighbors.
A237853
Number of (n+1) X (2+1) 0..1 arrays with no element greater than all horizontal neighbors or less than all vertical neighbors.
Terms
- a(0) =4a(1) =14a(2) =41a(3) =114a(4) =325a(5) =943a(6) =2731a(7) =7876a(8) =22702a(9) =65489a(10) =188972a(11) =545229a(12) =1572979a(13) =4538047a(14) =13092532a(15) =37772848a(16) =108976855a(17) =314404070a(18) =907073003a(19) =2616956517a(20) =7550066383a(21) =21782363122a(22) =62843332744a(23) =181306523557a(24) =523079446954
External references
- oeis: A237853