G.f.: exp( Sum_{n>=1} A005064(n)*x^n/n ), where A005064(n) = sum of cubes of primes dividing n.

Terms

a(0) =1a(1) =0a(2) =4a(3) =9a(4) =10a(5) =61a(6) =65a(7) =239a(8) =440a(9) =791a(10) =2172a(11) =3211a(12) =8018a(13) =14292a(14) =27174a(15) =56064a(16) =96092a(17) =195616a(18) =345831a(19) =643733a(20) =1189397a(21) =2102921a(22) =3864549a(23) =6804894a(24) =12150956a(25) =21419322a(26) =37460309a(27) =65511385a(28) =113436266a(29) =195931822