On integers of the forms k−2 and k2+1 |
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Authors: | Yong-Gao Chen |
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Institution: | Department of Mathematics, Nanjing Normal University, Jiangsu Province, Nanjing 210097, China |
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Abstract: | In this paper we prove that if (r,12)?3, then the set of positive odd integers k such that kr−2n has at least two distinct prime factors for all positive integers n contains an infinite arithmetic progression. The same result corresponding to kr2n+1 is also true. |
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Keywords: | 11A07 11B25 |
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