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Search: id:A098243
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| A098243 |
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Numbers having the same count of prime primitive roots (1,2) mod 4 opposite to 3 mod 4. |
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+0
1
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| 5, 7, 11, 14, 18, 22, 27, 31, 41, 43, 49, 50, 53, 54, 62, 73, 81, 101, 146, 166, 179, 206, 211, 227, 250, 317, 461, 478, 614, 811, 911, 961, 974, 1063, 1198, 1237, 1399, 1499, 1693, 1874, 1879, 2161, 2182, 2197, 2207, 2311, 2381, 2473, 2498, 2549, 2594, 2699
(list; graph; listen)
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OFFSET
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0,1
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COMMENT
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2 was counted with the primes 1 mod 4 because it is a frequent prime primitive root and primes 1,2 mod 4 together build sequence A002313.
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EXAMPLE
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31 has primitive roots 3,11,12,13,17,21,22,24
13 and 17 are primes 1 mod 4, count is 2
3 and 11 are primes 3 mod 4, count is 2.
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CROSSREFS
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Cf. A002313.
Adjacent sequences: A098240 A098241 A098242 this_sequence A098244 A098245 A098246
Sequence in context: A136055 A073340 A125293 this_sequence A037141 A029624 A075317
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KEYWORD
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nonn
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AUTHOR
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Sven Simon (sven-h.simon(AT)t-online.de), Aug 31 2004
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