Primes p such that 10p + 1, 100p + 1 and 1000p + 1 are also primes.

Terms

a(0) =7a(1) =13a(2) =19a(3) =103a(4) =823a(5) =1021a(6) =1579a(7) =1867a(8) =2503a(9) =3331a(10) =5779a(11) =6871a(12) =6949a(13) =9007a(14) =10093a(15) =10399a(16) =11317a(17) =11743a(18) =13327a(19) =13381a(20) =15859a(21) =16657a(22) =17539a(23) =17659a(24) =22189a(25) =26317a(26) =26557a(27) =26821a(28) =27397a(29) =27943