Primes p such that the p-th semiprime divided by the sum of the digits of p is a prime.

Terms

a(0) =2a(1) =3a(2) =7a(3) =23a(4) =131a(5) =313a(6) =353a(7) =397a(8) =887a(9) =1307a(10) =1439a(11) =1783a(12) =2003a(13) =2027a(14) =2069a(15) =2111a(16) =2593a(17) =2777a(18) =3541a(19) =4111a(20) =4201a(21) =4889a(22) =5653a(23) =5897a(24) =6421a(25) =6823a(26) =8353a(27) =8447a(28) =9721a(29) =9749