A152865 Beginnings of maximal chains of primes with two members (one link).

29, 37, 109, 131, 251, 269, 293, 359, 389, 401, 449, 461, 491, 547, 569, 607, 631, 743, 757, 857, 887, 971, 1109, 1151, 1163, 1187, 1289, 1301, 1319, 1373, 1427, 1453, 1499, 1613, 1667, 1801, 1831, 1879, 1913, 1979, 2003, 2029, 2137, 2243, 2377, 2393, 2459

Offset: 1

Author

Klaus Brockhaus, Dec 17 2008

Keywords

• nonn

Comments

For definitions see A152658, of which this is a subsequence.

Examples

			Second maximal chain of primes with two members (one link) is 37, 41; the linking prime is 977.
		

Links

• Klaus Brockhaus, Table of n, a(n) for n=1..1000

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), A152866, A152867, A152868, A152869, A152963, A152964.

Programs

PARI

{n=1; while(n<365, c=0; a=prime(n); while(isprime(n*prime(n)+(n+1)*prime(n+1)), c++; n++); if(c==1, print1(a, ",")); n++)}