Primes p whose period of reciprocal equals (p-1)/9.

Terms

a(0) =73a(1) =1423a(2) =1459a(3) =2377a(4) =2503a(5) =3457a(6) =7741a(7) =9433a(8) =10891a(9) =10909a(10) =16057a(11) =17299a(12) =17623a(13) =20269a(14) =21313a(15) =22699a(16) =24103a(17) =26263a(18) =28621a(19) =28927a(20) =29629a(21) =30817a(22) =32257a(23) =34273a(24) =34327a(25) =35461a(26) =35731a(27) =36343a(28) =36793a(29) =37549