Bases b where exactly seven primes p with p < b exist such that p is a base-b Wieferich prime.

Terms

a(0) =1451a(1) =1482a(2) =3145a(3) =3147a(4) =3277a(5) =3365a(6) =3376a(7) =4339a(8) =4357a(9) =4365a(10) =4393a(11) =4625a(12) =5649a(13) =5850a(14) =7282a(15) =7624a(16) =8641a(17) =8956a(18) =8957a(19) =9149a(20) =9449a(21) =10040a(22) =10093a(23) =10538a(24) =10835a(25) =10889a(26) =12001a(27) =12476a(28) =12907a(29) =13253