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A152868
Beginnings of maximal chains of primes with five members (four links).
8
61, 1069, 2293, 2879, 5441, 20347, 145823, 183949, 187171, 207629, 219649, 278087, 412171, 420467, 421273, 507503, 536479, 696937, 698311, 774929, 792283, 1028081, 1310137, 1432927, 1470757, 1726211, 1803881, 1861817, 1904477, 1928561
OFFSET
1,1
COMMENTS
For definitions see A152658, of which this is a subsequence.
LINKS
EXAMPLE
First maximal chain of primes with five members (four links) is 61, 67, 71, 73, 79; the linking primes are 2371, 2693, 2953, 3271.
PROG
(PARI) {n=1; while(n<144100, c=0; a=prime(n); while(isprime(n*prime(n)+(n+1)*prime(n+1)), c++; n++); if(c==4, print1(a, ", ")); n++)}
CROSSREFS
Cf. A152658 (beginnings of maximal chains of primes), A152735 (count of links in n-th maximal chain of primes), A152962 (beginning of the first maximal chain of primes with n links), A152865, A152866, A152867, A152869, A152963, A152964.
Sequence in context: A264306 A138790 A057534 * A218112 A154428 A262017
KEYWORD
nonn
AUTHOR
Klaus Brockhaus, Dec 17 2008
STATUS
approved