Number of ways prime(n) is a sum of three distinct primes.

Terms

a(0) =0a(1) =0a(2) =0a(3) =0a(4) =0a(5) =0a(6) =0a(7) =1a(8) =2a(9) =3a(10) =4a(11) =5a(12) =6a(13) =6a(14) =9a(15) =11a(16) =13a(17) =13a(18) =15a(19) =18a(20) =17a(21) =19a(22) =25a(23) =26a(24) =28a(25) =32a(26) =31a(27) =37a(28) =32a(29) =39