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Search: id:A076943
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| A076943 |
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Smallest k > 0 such that nk+1 is an n-th power. |
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+0
3
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| 1, 4, 21, 20, 1555, 2604, 299593, 820, 29127, 348678440, 67546215517, 20345052, 61054982558011, 281241170407092, 76861433640456465, 2690420, 128583032925805678351, 211927625868, 275941052631578947368421, 174339220
(list; graph; listen)
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OFFSET
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1,2
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COMMENT
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a(n) <= {(n+1)^n - 1}/n.
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MATHEMATICA
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Do[k = 2; While[ !IntegerQ[(k^n - 1)/n], k++ ]; Print[(k^n - 1)/n], {n, 1, 20}]
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CROSSREFS
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Cf. A076942, A076944, A074792.
Sequence in context: A103896 A083192 A128452 this_sequence A138228 A133784 A041821
Adjacent sequences: A076940 A076941 A076942 this_sequence A076944 A076945 A076946
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KEYWORD
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nice,nonn
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AUTHOR
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Amarnath Murthy (amarnath_murthy(AT)yahoo.com), Oct 19 2002
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EXTENSIONS
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Edited, corrected and extended by Robert G. Wilson v (rgwv(AT)rgwv.com), Oct 21 2002
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