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

 Hints (Greetings from The On-Line Encyclopedia of Integer Sequences!)
 A122128 Primes of form Sum[ Prime[k]^4, {k,1,n} ] or primes in A122102[n]. 1
 97, 1567204831, 771745495049, 2523423764749, 7766703722053, 16167518745751, 28962816187367, 42932141486099, 65562552714433, 109392979058371, 142311158323421, 194472382292633, 434809071709709, 654363068549089 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS A122102[n] = Sum[ Prime[k]^4, {k,1,n} ] begins {16,97,722,3123,17764,46325,...}. Indices n such that A122102[n] is prime are listed in A122127[n] = {2,32,90,110,134,152,168,180,194,212,222,234,270,290,300,...}. LINKS FORMULA a(n) = A122102[ A122127[n] ]. MATHEMATICA Select[Table[Sum[Prime[k]^4, {k, 1, n}], {n, 1, 700}], PrimeQ[ #1]&] CROSSREFS Cf. A122102, A122127. Sequence in context: A186167 A322606 A145309 * A114430 A258765 A033418 Adjacent sequences: A122125 A122126 A122127 * A122129 A122130 A122131 KEYWORD nonn AUTHOR Alexander Adamchuk, Aug 20 2006 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 February 1 12:28 EST 2023. Contains 359993 sequences. (Running on oeis4.)