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Search: id:A139464
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| A139464 |
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Numbers of the form n!+2n-1. |
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+0
4
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| 2, 5, 11, 31, 129, 731, 5053, 40335, 362897, 3628819, 39916821, 479001623, 6227020825, 87178291227, 1307674368029, 20922789888031, 355687428096033, 6402373705728035, 121645100408832037, 2432902008176640039
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OFFSET
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1,1
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REFERENCES
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F. Luca and I. E. Shparlinsky, 2005. On the largest prime factor of n! + 2n - 1. J. Th. des Nombres de Bordeaux Vol.17, Fasc. 3
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MATHEMATICA
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Table[n! + 2 n - 1, {n, 1, 40}]
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CROSSREFS
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Cf. A127986, A127987, A139023, A139024, A139465, A139466, A139467.
Sequence in context: A139467 A124481 A002862 this_sequence A101837 A124483 A079571
Adjacent sequences: A139461 A139462 A139463 this_sequence A139465 A139466 A139467
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KEYWORD
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nonn
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AUTHOR
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Artur Jasinski (grafix(AT)csl.pl), Apr 22 2008
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