Sum of exponents in prime-power factorization of p(n)+3.

Terms

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