n*10^4-1, n*10^4-3, n*10^4-7 and n*10^4-9 are all prime.

Terms

a(0) =1856a(1) =13301a(2) =14003a(3) =15545a(4) =21155a(5) =21593a(6) =24851a(7) =27557a(8) =37952a(9) =40013a(10) =44906a(11) =48515a(12) =53294a(13) =53891a(14) =59162a(15) =62282a(16) =62798a(17) =65714a(18) =71900a(19) =72560a(20) =74093a(21) =77915a(22) =79910a(23) =80426a(24) =83252a(25) =91421a(26) =99632a(27) =112829a(28) =118364a(29) =121367