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

Terms

a(0) =32a(1) =324a(2) =900a(3) =1783a(4) =3469a(5) =6786a(6) =13283a(7) =25624a(8) =48339a(9) =88755a(10) =158358a(11) =274636a(12) =463580a(13) =763045a(14) =1227226a(15) =1932567a(16) =2985495a(17) =4532457a(18) =6772837a(19) =9975443a(20) =14499382a(21) =20820285a(22) =29563005a(23) =41542090a(24) =57811531a(25) =79725503a(26) =109012056a(27) =147861974