A031967 - OEIS

%I #14 Aug 10 2021 18:47:19

%S 531,532,533,534,535,538,540,541,542,543,546,547,549,550,551,554,555,

%T 556,558,559,562,563,564,565,567,570,571,572,573,574,643,644,645,646,

%U 647,664,668,669,670,671,672,675,677,678,679

%N Numbers with exactly four distinct base-8 digits.

%t Select[Range[700],Count[DigitCount[#,8],0]==4&] (* _Harvey P. Dale_, Aug 04 2021 *)

%Y Cf. A007094.

%K nonn,base

%O 1,1

%A _Clark Kimberling_