Number of 5Xn 0..1 arrays with rows unimodal and antidiagonals nondecreasing.

Terms

a(0) =32a(1) =324a(2) =1288a(3) =3436a(4) =7812a(5) =16420a(6) =32814a(7) =63202a(8) =118117a(9) =214919a(10) =381436a(11) =661132a(12) =1120283a(13) =1857749a(14) =3018052a(15) =4808608a(16) =7522116a(17) =11565280a(18) =17495232a(19) =26065236a(20) =38281486a(21) =55473066a(22) =79377418a(23) =112243966a(24) =156958871a(25) =217194245a(26) =297585532