Number of 4Xn 0..3 arrays with diagonals and rows unimodal and antidiagonals nondecreasing.
A224283
Number of 4Xn 0..3 arrays with diagonals and rows unimodal and antidiagonals nondecreasing.
Terms
- a(0) =256a(1) =16000a(2) =186516a(3) =1334973a(4) =8073038a(5) =44901359a(6) =233090092a(7) =1121852243a(8) =4979825221a(9) =20391024279a(10) =77331512406a(11) =273217833082a(12) =905042600151
External references
- oeis: A224283