|
| |
|
|
A140458
|
|
Primes p such that p^2 is a sum of 5 successive primes.
|
|
1
|
|
|
|
31, 41, 137, 277, 283, 313, 353, 467, 659, 937, 1201, 1291, 1409, 1427, 1543, 1567, 1613, 1669, 1933, 2243, 2503, 2617, 2957, 3559, 3607, 3631, 4153, 4241, 5569, 5843, 6037, 6067
(list;
graph;
refs;
listen;
history;
text;
internal format)
|
|
|
|
OFFSET
|
1,1
|
|
|
LINKS
|
Moshe Levin, Table of n, a(n) for n = 1..2000
|
|
|
EXAMPLE
|
181+191+193+197+199=31^2, 317+331+337+347+349=41^2, 3733+3739+3761+3767+3769=137^2,...
|
|
|
MATHEMATICA
|
a = {}; For[n = 1, n < 10^4, n++, p1 = Prime[n]; p2 = Prime[n + 1]; p3 = Prime[n + 2]; p4 = Prime[n + 3]; p5 = Prime[n + 4]; p = (p1 + p2 + p3 + p4 + p5)^(1/2); If[PrimeQ[p], AppendTo[a, p]]]; a
Sqrt[# ]&/@Select[Total/@Partition[Prime[Range[500000]], 5, 1], PrimeQ[ Sqrt[#]]&] (* From Harvey P. Dale, Nov 12 2011 *)
Select[Sqrt[Total/@Partition[Prime[Range[500000]], 5, 1]], PrimeQ] (* Moshe Levin, Feb 08 2012 *)
|
|
|
CROSSREFS
|
Sequence in context: A040987 A040180 A158754 * A101520 A225862 A089713
Adjacent sequences: A140455 A140456 A140457 * A140459 A140460 A140461
|
|
|
KEYWORD
|
nonn
|
|
|
AUTHOR
|
Vladimir Joseph Stephan Orlovsky, Jun 26 2008
|
|
|
EXTENSIONS
|
More terms from Harvey P. Dale, Nov 12 2011
|
|
|
STATUS
|
approved
|
| |
|
|
