|
Search: id:A126557
|
|
| |
|
| 174737, 224327, 433813, 541447, 787243, 969667, 980081, 1080787, 1286581, 1372979, 1534513, 1567037, 1570649, 1577189, 1659673, 1726993, 1931291, 2242883, 2282041, 2415557, 2460827, 3162503, 3711047, 4090787, 4450373
(list; graph; listen)
|
|
|
OFFSET
|
1,1
|
|
|
COMMENT
|
Prime interprimes of third order.
Primes that are the arithmetic mean of two consecutive prime interprimes of second order; primes of the form (A126555(k)+A126555(k+1))/2.
|
|
PROGRAM
|
(PARI) {m=5000000; a=0; g=0; p=2; q=3; r=5; while(r<=m, if((p+r)/2==q, if(a>0, b=(a+q)/2; if(isprime(b), if(g>0, if(isprime(h=(g+b)/2), print1(h, ", "))); g=b)); a=q); p=q; q=r; r=nextprime(r+1))} - Klaus Brockhaus, Jan 11 2007
|
|
CROSSREFS
|
Cf. A006562 (balanced primes), A024675 (interprimes), A126554 (interprimes of second order), A126555 (prime interprimes of second order), A126556 (interprimes of third order).
Sequence in context: A034632 A166264 A029830 this_sequence A092012 A016763 A016775
Adjacent sequences: A126554 A126555 A126556 this_sequence A126558 A126559 A126560
|
|
KEYWORD
|
nonn
|
|
AUTHOR
|
Artur Jasinski (grafix(AT)csl.pl), Dec 27 2006
|
|
EXTENSIONS
|
Edited and extended by Klaus Brockhaus (klaus-brockhaus(AT)t-online.de), Jan 11 2007
|
|
|
Search completed in 0.002 seconds
|
