Table read by antidiagonals of numbers of form (2^n -1)*2^(m+2) + 3 where n>=1, m>=1.

Terms

a(0) =11a(1) =19a(2) =27a(3) =35a(4) =51a(5) =59a(6) =67a(7) =99a(8) =115a(9) =123a(10) =131a(11) =195a(12) =227a(13) =243a(14) =251a(15) =259a(16) =387a(17) =451a(18) =483a(19) =499a(20) =507a(21) =515a(22) =771a(23) =899a(24) =963a(25) =995a(26) =1011a(27) =1019a(28) =1027a(29) =1539