Number of 5 X n 0..2 arrays with rows nondecreasing and antidiagonals unimodal.

A224015

Number of 5 X n 0..2 arrays with rows nondecreasing and antidiagonals unimodal.

Terms

    a(0) =243a(1) =7776a(2) =62764a(3) =297859a(4) =1108969a(5) =3516324a(6) =9866389a(7) =25128396a(8) =59129041a(9) =130220738a(10) =271055417a(11) =537353315a(12) =1020817107a(13) =1867650094a(14) =3304497043a(15) =5674041696a(16) =9482969967a(17) =15465546464a(18) =24666658243a(19) =38548857659a(20) =59128689861

External references