Number of nX4 binary arrays with rows and columns in nondecreasing order.

Terms

a(0) =5a(1) =25a(2) =130a(3) =650a(4) =2942a(5) =11819a(6) =42305a(7) =136564a(8) =402910a(9) =1099694a(10) =2805530a(11) =6748066a(12) =15412437a(13) =33626131a(14) =70430778a(15) =142218719a(16) =277853339a(17) =526833235a(18) =972034814a(19) =1749218190a(20) =3076360192a(21) =5297051455a(22) =8943742419a(23) =14828643610a(24) =24172697276