A023069 Positive numbers k such that k and 3*k are anagrams in base 7 (written in base 7).

15, 150, 165, 1023, 1254, 1500, 1515, 1650, 1665, 2046, 10023, 10230, 10233, 10323, 12405, 12534, 12540, 12654, 13254, 15000, 15015, 15150, 15165, 15426, 16500, 16515, 16650, 16665, 20046, 20460, 20466, 20646, 100023, 100230, 100233, 100323, 102300

Offset

1,1

Links

Amiram Eldar, Table of n, a(n) for n = 1..10000

Mathematica

FromDigits[IntegerDigits[#, 7]] & /@ Select[Range[40000], SameQ @@ Sort /@ IntegerDigits[{#, 3*#}, 7] &] (* Amiram Eldar, Aug 07 2025 *)

Crossrefs

Cf. A007093.

Sequence in context: A055431 A119998 A119511 * A121035 A022739 A085375

Adjacent sequences: A023066 A023067 A023068 * A023070 A023071 A023072

Keyword

nonn,base

Author

David W. Wilson

Status

approved