Number of n X 4 0..1 arrays with rows, antidiagonals and columns unimodal.

Terms

a(0) =11a(1) =121a(2) =801a(3) =3712a(4) =13599a(5) =42109a(6) =114713a(7) =282273a(8) =639165a(9) =1350228a(10) =2689169a(11) =5091414a(12) =9224755a(13) =16081503a(14) =27096217a(15) =44293439a(16) =70470225a(17) =109418622a(18) =166193601a(19) =247432316a(20) =361730919a(21) =520085521a(22) =736404249a(23) =1028097709a(24) =1416755525