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A136061
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Mother primes of order 2.
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9
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11, 31, 61, 151, 181, 211, 331, 541, 631, 691, 751, 811, 991, 1051, 1201, 1381, 1531, 1741, 1831, 1861, 2161, 2281, 2311, 2731, 2851, 3001, 3061, 3301, 3361, 3541, 3631, 3691, 3931, 4051, 4111, 4261, 4591, 4831, 4951, 5101, 5431, 5581, 5641, 5851, 6151
(list; graph; refs; listen; history; internal format)
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OFFSET
| 1,1
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COMMENTS
| For smallest mother primes of order n see A136020 (also definition). For m other primes of order 1 see A091180
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MATHEMATICA
| n = 2; a = {}; Do[If[PrimeQ[(Prime[k] + 2n)/(2n + 1)], AppendTo[a, Prime[k]]], {k, 1, 1500}]; a
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CROSSREFS
| Cf. A088878, A091180, A136019, A136020, A136062, A136063, A136064, A136065, A136066, A136067, A136068, A136069, A136070.
Sequence in context: A062786 A090562 A174244 * A090233 A139836 A085715
Adjacent sequences: A136058 A136059 A136060 * A136062 A136063 A136064
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KEYWORD
| nonn
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AUTHOR
| Artur Jasinski (grafix(AT)csl.pl), Dec 12 2007
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