Number of (n+1)X(4+1) 0..2 arrays with every 2X2 subblock antidiagonal maximum minus diagonal minimum nondecreasing horizontally and diagonal maximum minus antidiagonal minimum nondecreasing vertically.
A253529
Number of (n+1)X(4+1) 0..2 arrays with every 2X2 subblock antidiagonal maximum minus diagonal minimum nondecreasing horizontally and diagonal maximum minus antidiagonal minimum nondecreasing vertically.
Terms
- a(0) =7253a(1) =27070a(2) =62237a(3) =182493a(4) =398710a(5) =949158a(6) =2008246a(7) =4342893a(8) =8951319a(9) =18483480a(10) =37447005a(11) =75653443a(12) =151756020a(13) =303701337a(14) =606456423a(15) =1209715276a(16) =2412487047a(17) =4810079658a(18) =9594345755a(19) =19140473863a(20) =38203883340a(21) =76274256635a(22) =152344233515
External references
- oeis: A253529