a(n) = A059895(A260443(n), A260443(1+n)).

Terms

a(0) =1a(1) =1a(2) =3a(3) =1a(4) =1a(5) =1a(6) =15a(7) =1a(8) =1a(9) =1a(10) =3a(11) =5a(12) =1a(13) =1a(14) =105a(15) =1a(16) =1a(17) =7a(18) =75a(19) =5a(20) =5a(21) =125a(22) =525a(23) =7a(24) =7a(25) =25a(26) =75a(27) =35a(28) =1a(29) =1