The OEIS is supported by the many generous donors to the OEIS Foundation.

 Hints (Greetings from The On-Line Encyclopedia of Integer Sequences!)
 A255208 Primes p for which exactly five bases b with 1 < b < p exist such that p is a base b Wieferich prime. 8
 653, 4909, 7723, 9811, 13691, 15413, 18133, 18223, 21061, 22147, 25679, 29131, 33923, 35353, 36913, 37633, 46021, 57527, 61819, 66107, 71059, 72643, 77867, 79867, 85061, 87509, 89113, 96757, 97213, 98641, 117977, 118163, 120247, 122209, 123653, 126443, 129061 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS p = prime(n) such that A242830(n) = 5. LINKS Table of n, a(n) for n=1..37. PROG (PARI) forprime(p=1, , b=2; i=0; while(b < p, if(Mod(b, p^2)^(p-1)==1, i++); b++); if(i==5, print1(p, ", "))) CROSSREFS Cf. A255203, A255204, A255205, A255206, A255207, A255209, A255210. Sequence in context: A145125 A145202 A188366 * A060520 A250701 A250158 Adjacent sequences: A255205 A255206 A255207 * A255209 A255210 A255211 KEYWORD nonn AUTHOR Felix Fröhlich, Feb 17 2015 STATUS approved

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recents
The OEIS Community | Maintained by The OEIS Foundation Inc.

Last modified August 11 01:05 EDT 2024. Contains 375059 sequences. (Running on oeis4.)