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

Terms

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