Number of nX4 0..2 arrays with antidiagonals unimodal and rows and diagonals nondecreasing.

A223995

Number of nX4 0..2 arrays with antidiagonals unimodal and rows and diagonals nondecreasing.

Terms

    a(0) =15a(1) =155a(2) =1144a(3) =7927a(4) =55333a(5) =388598a(6) =2743444a(7) =19437479a(8) =138010718a(9) =981047716a(10) =6977843175a(11) =49645292212a(12) =353262192994

External references