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A073614 Numbers m such that m*(prime(m)+1) is a square. 0
150, 1274, 7776, 37631, 96625, 1436778, 1617173, 8751645, 11873964, 78580934, 391317723, 403263375, 429830078, 1653987950, 1989687200, 2125840598, 2546468442, 8179002128, 8179002164, 8179002192, 30860615042, 31374585176 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
COMMENTS
a(23) > pi(10^12). [Donovan Johnson, Feb 26 2010]
LINKS
MAPLE
for i from 1 to 250000 do `if`(issqr(i*(ithprime(i)+1))=true, i, NULL); od;
PROG
(PARI) isok(m) = issquare(m*(prime(m)+1)); \\ Michel Marcus, Feb 18 2021
CROSSREFS
Cf. A083726.
Sequence in context: A250544 A251801 A211554 * A191547 A184673 A184665
KEYWORD
nonn,more
AUTHOR
Benoit Cloitre, Aug 29 2002
EXTENSIONS
More terms from Francois Jooste (pin(AT)myway.com), Mar 16 2003
a(6)-a(22) from Donovan Johnson, Feb 26 2010
STATUS
approved

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Last modified April 18 15:48 EDT 2024. Contains 371780 sequences. (Running on oeis4.)