Triangle T(n,m) = (A006882(2*n + 1))^2 / ( A006882(2*m+1) * A006882(2*n-2*m+1) ).

Terms

a(0) =1a(1) =3a(2) =3a(3) =15a(4) =25a(5) =15a(6) =105a(7) =245a(8) =245a(9) =105a(10) =945a(11) =2835a(12) =3969a(13) =2835a(14) =945a(15) =10395a(16) =38115a(17) =68607a(18) =68607a(19) =38115a(20) =10395a(21) =135135a(22) =585585a(23) =1288287a(24) =1656369a(25) =1288287a(26) =585585a(27) =135135a(28) =2027025a(29) =10135125