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Search: id:A144327
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| A144327 |
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Prime numbers p such that p - 1 is the fourth a-figurate number and nineteenth b-figurate number for some a and b. |
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+0
1
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| 191, 1217, 1559, 1901, 2243, 2927, 4637, 6689, 8741, 9767, 12161, 12503, 13187, 14897, 15581, 15923, 16607, 17291, 19001, 20369, 21737, 22079, 23447, 23789, 24473, 25841, 26183, 27551, 27893, 30971, 33023, 35759, 37811, 38153, 39521
(list; graph; listen)
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OFFSET
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1,1
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COMMENT
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Sequence of primes sufficient to determine the conjecture of A144326. Presumed to include many terms that cannot be Mersenne prime exponents, noting A096676: either infinitely many, or all.
These primes are very rare. There are only 10 less than 10000 and only 85 less than 100000.
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CROSSREFS
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Cf. A096676, A144326
Sequence in context: A103733 A142451 A083980 this_sequence A107955 A061331 A084003
Adjacent sequences: A144324 A144325 A144326 this_sequence A144328 A144329 A144330
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KEYWORD
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easy,nonn
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AUTHOR
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Reikku Kulon (reikku(AT)gmail.com), Sep 17 2008
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