Number of n X 3 0..1 arrays with rows, diagonals and antidiagonals unimodal and columns nondecreasing.

A223833

Number of n X 3 0..1 arrays with rows, diagonals and antidiagonals unimodal and columns nondecreasing.

Terms

    a(0) =7a(1) =22a(2) =48a(3) =89a(4) =149a(5) =232a(6) =342a(7) =483a(8) =659a(9) =874a(10) =1132a(11) =1437a(12) =1793a(13) =2204a(14) =2674a(15) =3207a(16) =3807a(17) =4478a(18) =5224a(19) =6049a(20) =6957a(21) =7952a(22) =9038a(23) =10219a(24) =11499a(25) =12882a(26) =14372a(27) =15973a(28) =17689a(29) =19524

External references