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A144327 Prime numbers p such that p - 1 is the fourth a-figurate number and nineteenth b-figurate number for some a and b. 0
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; refs; listen; history; internal format)
OFFSET

1,1

COMMENTS

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.

CROSSREFS

Cf. A096676, A144326

Sequence in context: A103733 A142451 A083980 * A107955 A061331 A177683

Adjacent sequences:  A144324 A144325 A144326 * A144328 A144329 A144330

KEYWORD

easy,nonn

AUTHOR

Reikku Kulon (reikku(AT)gmail.com), Sep 17 2008

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Last modified February 14 03:37 EST 2012. Contains 205570 sequences.