Numerators b(n) of Pythagorean approximations b(n)/a(n) to 3/5.

Terms

a(0) =0a(1) =3a(2) =33a(3) =180a(4) =611a(5) =1909a(6) =2340a(7) =12567a(8) =163797a(9) =879480a(10) =2996279a(11) =9346681a(12) =11463480a(13) =61551003a(14) =802279833a(15) =4307690700a(16) =14675777531a(17) =45780038029a(18) =56148124860a(19) =301476797967