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A152865
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Beginnings of maximal chains of primes with two members (one link).
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8
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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
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OFFSET
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1,1
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COMMENTS
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For definitions see A152658, of which this is a subsequence.
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LINKS
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EXAMPLE
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Second maximal chain of primes with two members (one link) is 37, 41; the linking prime is 977.
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PROG
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(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++)}
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CROSSREFS
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KEYWORD
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nonn
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AUTHOR
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STATUS
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approved
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