Numbers n such that 10000000n+1, 10000000n+3, 10000000n+7, 10000000n+9 are all primes.

Terms

a(0) =12022a(1) =15298a(2) =44413a(3) =61507a(4) =72199a(5) =87463a(6) =96538a(7) =108862a(8) =112129a(9) =117694a(10) =122176a(11) =125716a(12) =175078a(13) =185746a(14) =201493a(15) =227221a(16) =250414a(17) =267844a(18) =273460a(19) =371194a(20) =387028a(21) =391765a(22) =397066a(23) =397792a(24) =454921a(25) =581365a(26) =601177a(27) =621010a(28) =642199a(29) =659788