a(n) = (tau(n^12)+11)/12.

Terms

a(0) =1a(1) =2a(2) =2a(3) =3a(4) =2a(5) =15a(6) =2a(7) =4a(8) =3a(9) =15a(10) =2a(11) =28a(12) =2a(13) =15a(14) =15a(15) =5a(16) =2a(17) =28a(18) =2a(19) =28a(20) =15a(21) =15a(22) =2a(23) =41a(24) =3a(25) =15a(26) =4a(27) =28a(28) =2a(29) =184