Number of 3 X n 0..3 arrays with antidiagonals unimodal and rows and diagonals nondecreasing.

A223963

Number of 3 X n 0..3 arrays with antidiagonals unimodal and rows and diagonals nondecreasing.

Terms

    a(0) =64a(1) =707a(2) =3471a(3) =12311a(4) =36028a(5) =92734a(6) =217144a(7) =471994a(8) =965172a(9) =1874532a(10) =3482781a(11) =6225291a(12) =10754192a(13) =18022648a(14) =29393806a(15) =46779538a(16) =72814768a(17) =111073890a(18) =166336539a(19) =244910775a(20) =355022580a(21) =507281450a(22) =715232788a(23) =996008770a(24) =1371090364

External references