A082251 Primes that are the sum of 9 consecutive primes.

127, 401, 439, 479, 593, 881, 929, 977, 1163, 1213, 1321, 1367, 1459, 1511, 1601, 1747, 1801, 1951, 1999, 2053, 2111, 2393, 2713, 3299, 3457, 3517, 3571, 3739, 3793, 4091, 4253, 4621, 4691, 4969, 5413, 5521, 5827, 5987, 6173, 6379, 6947, 7151, 7741

Offset

1,1

Links

Syed Iddi Hasan, Table of n, a(n) for n = 1..10000

Mathematica

Clear[Sum9Primes]; Sum9Primes[a_]:=Module[{p}, p=Prime[a]+Prime[a+1] +Prime[a+2]+Prime[a+3]+Prime[a+4]+Prime[a+5] +Prime[a+6] +Prime[a+7]+Prime[a+8]]; lst={}; Do[If[PrimeQ[p=Sum9Primes[n]], AppendTo[lst, p]], {n, 6!}]; lst (* Vladimir Joseph Stephan Orlovsky, Apr 06 2009 *)

Prog

(PARI) \\ primes in the sum of m odd number of consecutive primes. m=9
psumprm(m, n) = { sr=0; s=0; for(j=1, m, s+=prime(j); ); for(x=1, n, s = s - prime(x)+ prime(x+m); if(isprime(s), sr+=1.0/s; print1(s" ")); ); print(); print(sr) }

Crossrefs

Sequence in context: A143034 A159521 A122691 * A142384 A298237 A299363

Adjacent sequences: A082248 A082249 A082250 * A082252 A082253 A082254

Keyword

easy,nonn

Author

Cino Hilliard, May 09 2003

Status

approved