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 A023059 k and 2k are anagrams in base 4 (written in base 4). 0
 102, 123, 1002, 1020, 1032, 1203, 1230, 1233, 1302, 1323, 10002, 10020, 10032, 10200, 10221, 10320, 10332, 11022, 11223, 12003, 12030, 12033, 12231, 12300, 12330, 12333, 13002, 13020, 13032, 13203, 13230, 13233, 13302, 13323, 100002, 100020, 100032 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 LINKS Table of n, a(n) for n=1..37. EXAMPLE 102 * 2 = 210, which uses the same digits, hence 102 is in the sequence. 103 * 2 = 212, which is missing the 0 and the 3, so 103 is not in the sequence. MATHEMATICA BaseForm[Select[Range[4096], Sort[IntegerDigits[#, 4]] == Sort[IntegerDigits[2#, 4]] &], 4] (* Alonso del Arte, Nov 10 2018 *) CROSSREFS Cf. A007090. Sequence in context: A181986 A107838 A095637 * A015165 A160918 A145578 Adjacent sequences: A023056 A023057 A023058 * A023060 A023061 A023062 KEYWORD nonn,base AUTHOR David W. Wilson STATUS approved

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Last modified September 30 09:22 EDT 2023. Contains 365784 sequences. (Running on oeis4.)