Triangle read by rows: T(n,k) = number of j-covers of [n] with j<=k, k=1..2^n-1.

Terms

a(0) =1a(1) =1a(2) =4a(3) =5a(4) =1a(5) =13a(6) =45a(7) =80a(8) =101a(9) =108a(10) =109a(11) =1a(12) =40a(13) =361a(14) =1586a(15) =4505a(16) =9482a(17) =15913a(18) =22348a(19) =27353a(20) =30356a(21) =31721a(22) =32176a(23) =32281a(24) =32296a(25) =32297a(26) =1a(27) =121a(28) =2681a(29) =27671