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Search: id:A099145
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| A099145 |
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Numbers in base 10 that are palindromic in bases 7 and 8. |
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+0
3
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| 1, 2, 3, 4, 5, 6, 121, 178, 235, 292, 300, 2997, 6953, 7801, 10658, 13459, 16708, 428585, 431721, 444713, 447849, 450985, 502457, 626778, 786435, 10453500, 27924649
(list; graph; listen)
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OFFSET
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1,2
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EXAMPLE
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178 is in the sequence because 178_10 = 343_7 = 262_8.
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MATHEMATICA
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palQ[n_Integer, base_Integer] := Block[{idn = IntegerDigits[n, base]}, idn == Reverse[ idn]]; Select[ Range[ 150000000], palQ[ #, 7] && palQ[ #, 8] &]
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CROSSREFS
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Cf. A048268, A060792, A097928, A097929, A097930, A097931, A099146, A029965, A029966, A099147, A099153.
Sequence in context: A037331 A037438 A100793 this_sequence A004868 A073788 A004879
Adjacent sequences: A099142 A099143 A099144 this_sequence A099146 A099147 A099148
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KEYWORD
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base,nonn
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AUTHOR
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Robert G. Wilson v (rgwv(AT)rgwv.com), Sep 30 2004
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