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URL: https://oeis.org/A165091

⇱ A165091 - OEIS

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A165091
a(n) = A165090(n)/7.
9
0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 1, 2, 3, 4, 5, 6, 2, 1, 0, 1, 2, 3, 4, 5, 3, 2, 1, 0, 1, 2, 3, 4, 4, 3, 2, 1, 0, 1, 2, 3, 5, 4, 3, 2, 1, 0, 1, 2, 6, 5, 4, 3, 2, 1, 0, 1, 7, 6, 5, 4, 3, 2, 1, 0, 9, 9, 18, 27, 36, 45, 54, 63, 9, 0, 9, 18, 27, 36, 45, 54, 18, 9, 9, 18, 27, 36, 45, 54, 27, 18, 18, 18, 27, 36
OFFSET
0,12
MATHEMATICA
A165091[n_] := (FromDigits[ReverseSort[#], 8] - FromDigits[Sort[#], 8] & [IntegerDigits[n, 8]])/7;
Array[A165091, 100, 0] (* Paolo Xausa, Jan 24 2026 *)
CROSSREFS
Cf. A165090.
In other bases: A164884 (base 2), A164994 (base 3), A165013 (base 4), A165033 (base 5), A165052 (base 6), A165072 (base 7), A165111 (base 9), A151950 (base 10).
Sequence in context: A037894 A037902 A037840 * A192514 A105257 A125937
KEYWORD
base,nonn
AUTHOR
Joseph Myers, Sep 04 2009
STATUS
approved