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

Author

Cino Hilliard, May 09 2003

Keywords

• easy
• nonn

Links

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

Programs

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 *)

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) }