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

 Hints (Greetings from The On-Line Encyclopedia of Integer Sequences!)
 A211238 Prime numbers p such that x^2 + x + p produces primes for x = 0..9 but not x = 10. 3
 11, 844427, 51448361, 86966771, 122983031, 960959381, 2426256797, 2911675511, 3013107257, 4778888351, 5221343711, 5258591537, 6430890287, 7156316591, 8518049207, 8828280941, 9467776751, 10687380227, 10783636931, 11856793337, 12128287007, 14431067237, 14772642497 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS The first term is A164926(10). LINKS Zak Seidov, Table of n, a(n) for n = 1..133 MATHEMATICA lookfor = 10; t = {}; n = 0; While[Length[t] < 25, n++; c = Prime[n]; i = 1; While[PrimeQ[i^2 + i + c], i++]; If[i == lookfor, AppendTo[t, c]]]; t CROSSREFS Cf. A067774, A164926. Sequence in context: A243130 A253632 A112854 * A014127 A049192 A156670 Adjacent sequences: A211235 A211236 A211237 * A211239 A211240 A211241 KEYWORD nonn AUTHOR T. D. Noe, Apr 08 2012 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 October 3 22:39 EDT 2023. Contains 365872 sequences. (Running on oeis4.)