Exponent of the n-th prime power A000961(n).

Terms

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