Primes p whose period of reciprocal equals (p-1)/5.

Terms

a(0) =11a(1) =251a(2) =1061a(3) =1451a(4) =1901a(5) =1931a(6) =2381a(7) =3181a(8) =3491a(9) =3851a(10) =4621a(11) =4861a(12) =5261a(13) =6101a(14) =6491a(15) =6581a(16) =6781a(17) =7331a(18) =8101a(19) =9941a(20) =10331a(21) =10771a(22) =11251a(23) =11261a(24) =11411a(25) =12301a(26) =14051a(27) =14221a(28) =14411a(29) =15091