Triangle read by rows: T(n,k) = 2*A001263(n,k) - 1.

Terms

a(0) =1a(1) =1a(2) =1a(3) =1a(4) =5a(5) =1a(6) =1a(7) =11a(8) =11a(9) =1a(10) =1a(11) =19a(12) =39a(13) =19a(14) =1a(15) =1a(16) =29a(17) =99a(18) =99a(19) =29a(20) =1a(21) =1a(22) =41a(23) =209a(24) =349a(25) =209a(26) =41a(27) =1a(28) =1a(29) =55