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Search: id:A096257
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| A096257 |
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The least k whose n-th root contains k as a string of digits to the immediate right of the decimal point (excluding leading zeros). |
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+0
1
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| 8, 2, 3, 633, 19703, 89, 69, 56, 46, 39, 33, 29, 25, 22, 20, 18, 16, 14, 13, 12, 11, 10, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 3, 3, 138, 133, 128, 124, 120, 116, 113, 109, 106, 103, 100, 97, 95, 92, 90, 87, 85, 83, 81, 79, 77, 75, 74, 72, 70, 69, 67, 66, 65, 63, 62, 61, 59, 58, 57
(list; graph; listen)
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OFFSET
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2,1
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MATHEMATICA
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f[k_, n_] := Block[{l = Floor[ Log[10, k] + 1], rd = RealDigits[ k^(1/n), 10, 24], id = IntegerDigits[k]}, rdd = Drop[ rd[[1]], rd[[2]]]; While[ rdd[[1]] == 0, rdd = Drop[rdd, 1]]; Take[rdd, l] == id]; g[n_] := Block[{k = 2}, While[IntegerQ[k^(1/n)] || f[k, n] == False, k++ ]; k]; Table[ g[n], {n, 2, 72}]
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CROSSREFS
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Cf. A074841, A074762.
Sequence in context: A140244 A160105 A167162 this_sequence A125578 A083729 A019775
Adjacent sequences: A096254 A096255 A096256 this_sequence A096258 A096259 A096260
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KEYWORD
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base,nonn
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AUTHOR
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Paul Lusch (plusch(AT)flash.net) and Robert G. Wilson v (rgwv(AT)rgwv.com), Jul 31 2004
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