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A043016
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Base-7 palindromes that start with 2.
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1
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2, 16, 100, 107, 114, 121, 128, 135, 142, 688, 744, 800, 856, 912, 968, 1024, 4804, 4853, 4902, 4951, 5000, 5049, 5098, 5154, 5203, 5252, 5301, 5350, 5399, 5448, 5504, 5553, 5602, 5651, 5700, 5749, 5798, 5854, 5903, 5952, 6001, 6050, 6099, 6148, 6204, 6253
(list;
graph;
refs;
listen;
history;
text;
internal format)
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OFFSET
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1,1
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LINKS
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Robert P. P. McKone, Table of n, a(n) for n = 1..800
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MATHEMATICA
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okQ[n_] := Module[{idn = IntegerDigits[n, 7]}, First[idn] == 2 && FromDigits[IntegerDigits[n, 7]] == FromDigits[Reverse[idn]]]; Select[Range[6253], okQ] // Parallelize (* Robert P. P. McKone, Aug 22 2021, after Harvey P. Dale *)
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CROSSREFS
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Cf. A007093, A029954, A043060.
Sequence in context: A207913 A208694 A319603 * A197202 A032260 A197800
Adjacent sequences: A043013 A043014 A043015 * A043017 A043018 A043019
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KEYWORD
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nonn,base
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AUTHOR
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Clark Kimberling
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EXTENSIONS
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More terms from Robert P. P. McKone, Aug 22 2021
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STATUS
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approved
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