Number of nX5 0..2 arrays with rows and antidiagonals unimodal and columns nondecreasing.

A223915

Number of nX5 0..2 arrays with rows and antidiagonals unimodal and columns nondecreasing.

Terms

    a(0) =86a(1) =1600a(2) =13347a(3) =74040a(4) =319156a(5) =1147712a(6) =3588729a(7) =10031780a(8) =25574524a(9) =60357024a(10) =133401811a(11) =278664144a(12) =554222764a(13) =1055811684a(14) =1936212233a(15) =3432395716a(16) =5902734700a(17) =9877089124a(18) =16123126195a(19) =25732854408a(20) =40234046052a(21) =61731993272

External references