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 A043542 Number of distinct base-15 digits of n. 2

%I

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

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

%U 2,2,2,2,2,2,2,2,2,2,2,1,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,1,2,2,2,2,2,2,2,2,2

%N Number of distinct base-15 digits of n.

%H Antti Karttunen, <a href="/A043542/b043542.txt">Table of n, a(n) for n = 1..65536</a>

%t Table[Length[Union[IntegerDigits[n,15]]],{n,110}] (* _Harvey P. Dale_, Jul 14 2020 *)

%o (PARI) A043542(n) = #vecsort(digits(n, 15), , 8); \\ _Antti Karttunen_, Oct 08 2017

%Y Cf. A043289, A043567.

%K nonn,base

%O 1,15

%A _Clark Kimberling_

%E More terms from _Antti Karttunen_, Oct 08 2017

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Last modified May 26 13:59 EDT 2022. Contains 354092 sequences. (Running on oeis4.)