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A099145 Numbers in base 10 that are palindromic in bases 7 and 8. 21
0, 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; refs; listen; history; text; internal format)
OFFSET
1,3
COMMENTS
Intersection of A029954 and A029803. - Michel Marcus, Oct 09 2014
LINKS
Giovanni Resta, Table of n, a(n) for n = 1..48 (first 37 terms from Robert G. Wilson v)
EXAMPLE
178 is in the sequence because 178_10 = 343_7 = 262_8.
MATHEMATICA
palQ[n_Integer, base_Integer] := Block[{idn = IntegerDigits[n, base]}, idn == Reverse[ idn]]; Select[ Range[ 150000000], palQ[ #, 7] && palQ[ #, 8] &]
CROSSREFS
Sequence in context: A171596 A318909 A100793 * A004868 A073788 A326315
KEYWORD
base,nonn
AUTHOR
Robert G. Wilson v, Sep 30 2004
STATUS
approved

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Last modified March 29 05:28 EDT 2024. Contains 371264 sequences. (Running on oeis4.)