Array T read by diagonals: T(k,n) = 2^(k-1) * (3^n - 1) + 1.

Terms

a(0) =1a(1) =2a(2) =1a(3) =5a(4) =3a(5) =1a(6) =14a(7) =9a(8) =5a(9) =1a(10) =41a(11) =27a(12) =17a(13) =9a(14) =1a(15) =122a(16) =81a(17) =53a(18) =33a(19) =17a(20) =1a(21) =365a(22) =243a(23) =161a(24) =105a(25) =65a(26) =33a(27) =1a(28) =1094a(29) =729