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

 Hints (Greetings from The On-Line Encyclopedia of Integer Sequences!)
 A273940 Primes of the form 5^n - n. 2
 23, 15619, 244140613 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS Corresponding n are given in A058046. The next term has 254 digits. LINKS Table of n, a(n) for n=1..3. MATHEMATICA Select[Table[5^n - n, {n, 400}], PrimeQ] PROG (Magma) [a: n in [0..400] | IsPrime(a) where a is 5^n-n]; (PARI) forstep(n=2, 1e4, 2, if(ispseudoprime(t=5^n-n), print1(t", "))) \\ Charles R Greathouse IV, Jun 08 2016 CROSSREFS Cf. primes of the form k^n - n: A081296 (k=2), A224420 (k=3), A224451 (k=4), this sequence (k=5), A273941 (k=6), A224468 (k=7), A224469 (k=8). Cf. A058046. Sequence in context: A013728 A028693 A324255 * A348307 A033998 A157167 Adjacent sequences: A273937 A273938 A273939 * A273941 A273942 A273943 KEYWORD nonn,bref AUTHOR Vincenzo Librandi, Jun 05 2016 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 July 18 06:54 EDT 2024. Contains 374377 sequences. (Running on oeis4.)