Numbers k such that k*10^10-1, k*10^10-3, k*10^10-7 and k*10^10-9 are all prime.

Terms

a(0) =13532a(1) =72938a(2) =84614a(3) =118802a(4) =153854a(5) =195725a(6) =233642a(7) =269750a(8) =329621a(9) =425381a(10) =432449a(11) =456401a(12) =488633a(13) =494345a(14) =586346a(15) =628883a(16) =660005a(17) =693500a(18) =702563a(19) =712199a(20) =760196a(21) =804485a(22) =831188a(23) =862790a(24) =981359a(25) =982922a(26) =1040756a(27) =1067657a(28) =1105667