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A043534 Number of distinct base-7 digits of n. 2

%I #13 Apr 24 2021 21:25:41

%S 1,1,1,1,1,1,2,1,2,2,2,2,2,2,2,1,2,2,2,2,2,2,2,1,2,2,2,2,2,2,2,1,2,2,

%T 2,2,2,2,2,1,2,2,2,2,2,2,2,1,2,2,3,3,3,3,3,2,1,2,2,2,2,2,3,2,2,3,3,3,

%U 3,3,2,3,2,3,3,3,3,2,3,3,2,3,3,3,2,3,3,3,2,3

%N Number of distinct base-7 digits of n.

%H Robert Israel, <a href="/A043534/b043534.txt">Table of n, a(n) for n = 1..10000</a>

%p seq(nops(convert(convert(n,base,7),set)), n=1..100); # _Robert Israel_, Sep 18 2016

%Y Cf. A007093.

%K nonn,base

%O 1,7

%A _Clark Kimberling_

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Last modified April 18 20:26 EDT 2024. Contains 371781 sequences. (Running on oeis4.)