Smallest primitive prime factor of 11^n-1.

Terms

a(0) =2a(1) =3a(2) =7a(3) =61a(4) =3221a(5) =37a(6) =43a(7) =7321a(8) =1772893a(9) =13421a(10) =15797a(11) =13a(12) =1093a(13) =1623931a(14) =195019441a(15) =17a(17) =590077a(19) =212601841a(20) =1723a(21) =23a(22) =829a(23) =10657a(24) =3001a(25) =53a(27) =29a(28) =523a(29) =31a(30) =50159a(31) =51329a(32) =661