This site is supported by donations to The OEIS Foundation.

 Hints (Greetings from The On-Line Encyclopedia of Integer Sequences!)
 A271048 Numbers n such that A000070(n) is prime. 0
 1, 3, 5, 8, 9, 10, 13, 18, 19, 36, 46, 60, 71, 79, 86, 95, 140, 174, 178, 221, 237, 284, 286, 300, 316, 404, 441, 445, 452, 454, 647, 717, 741, 754, 787, 853, 932, 945, 968, 1065, 1098, 1145, 1163, 1170, 1196, 1327, 1657, 1664, 1994, 2074, 2210, 2287, 2333 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,2 LINKS EXAMPLE 5 is a term because A000070(5) = 19 and 19 a is prime. MATHEMATICA Complement[Table[If[PrimeQ[Sum[PartitionsP[n], {n, 0, k}]] == True, k, 0], {k, 0, 2000}], {0}] PROG (PARI) isok(n) = isprime(sum(k=0, n, numbpart(k))); \\ Michel Marcus, Apr 06 2016 CROSSREFS Cf. A000040, A000041, A000070. Sequence in context: A107820 A191931 A064186 * A189127 A189288 A190205 Adjacent sequences:  A271045 A271046 A271047 * A271049 A271050 A271051 KEYWORD nonn AUTHOR Benedict W. J. Irwin, Mar 29 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 | Recent | More pages
The OEIS Community | Maintained by The OEIS Foundation Inc.

Last modified November 13 13:15 EST 2018. Contains 317149 sequences. (Running on oeis4.)