a(n) = A276086(A025487(n)).

Terms

a(0) =2a(1) =3a(2) =9a(3) =5a(4) =15a(5) =25a(6) =225a(7) =625a(8) =7a(9) =21a(10) =35a(11) =875a(12) =49a(13) =441a(14) =1225a(15) =1715a(16) =2401a(17) =36015a(18) =1500625a(19) =117649a(20) =2941225a(21) =11a(22) =55a(23) =77a(24) =17325a(25) =67375a(26) =184877a(27) =115548125a(28) =121a(29) =3025