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Search: id:A051861
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| A051861 |
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Twice the positions in A051686 at which new primes appears in the sequence. |
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+0
2
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| 2, 4, 16, 38, 58, 72, 148, 170, 178, 282, 388, 446, 512, 652, 656, 758, 836, 856, 1514, 1592, 1648, 1712, 1906, 1918, 2034, 2606, 2758, 4094, 4936, 5624, 5758, 5842, 5924, 6764, 8188, 10570, 10922, 11072, 11482, 13082, 13972, 14626, 15212, 16018, 18986
(list; graph; listen)
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OFFSET
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1,1
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COMMENT
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Halving this sequence gives 1,2,8,19,...,256,326,...,47764,.., the indices in A051686 at which primes appear which have not occurred before. A051692 shows the same values not in order of their magnitude, but in increasing order of the emerging primes in A051686.
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CROSSREFS
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Cf. A051686, A051692, A005384.
Adjacent sequences: A051858 A051859 A051860 this_sequence A051862 A051863 A051864
Sequence in context: A074411 A000216 A110998 this_sequence A048222 A062330 A133465
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KEYWORD
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nonn
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AUTHOR
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Labos E. (labos(AT)ana.sote.hu), Dec 14 1999
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