Primes p such that 1000p+1, 1000p+3, 1000p+7 and 1000p+9 are prime.

Terms

a(0) =13a(1) =1447a(2) =5527a(3) =28201a(4) =36217a(5) =75079a(6) =81157a(7) =95911a(8) =187423a(9) =188677a(10) =202327a(11) =210643a(12) =248077a(13) =263323a(14) =282589a(15) =283267a(16) =423043a(17) =466897a(18) =472597a(19) =478189a(20) =478603a(21) =631273a(22) =640261a(23) =695749a(24) =730111a(25) =736279a(26) =806929a(27) =808021a(28) =917641a(29) =964303