Distinct odd numbers in the triangle of denominators in Leibniz's Harmonic Triangle.

Terms

a(0) =1a(1) =3a(2) =5a(3) =7a(4) =105a(5) =9a(6) =11a(7) =495a(8) =13a(9) =6435a(10) =15a(11) =1365a(12) =15015a(13) =45045a(14) =17a(15) =19a(16) =2907a(17) =21a(18) =101745a(19) =23a(20) =5313a(21) =168245a(22) =1716099a(23) =25a(24) =18386775a(25) =27a(26) =8775a(27) =42181425a(28) =143416845a(29) =29