login

Year-end appeal: Please make a donation to the OEIS Foundation to support ongoing development and maintenance of the OEIS. We are now in our 61st year, we have over 378,000 sequences, and we’ve reached 11,000 citations (which often say “discovered thanks to the OEIS”).

Numbers whose base-13 expansion has no run of digits with length < 2.
2

%I #10 Aug 13 2021 05:33:18

%S 14,28,42,56,70,84,98,112,126,140,154,168,183,366,549,732,915,1098,

%T 1281,1464,1647,1830,2013,2196,2366,2380,2394,2408,2422,2436,2450,

%U 2464,2478,2492,2506,2520,2534,4732,4746,4760,4774

%N Numbers whose base-13 expansion has no run of digits with length < 2.

%H Vincenzo Librandi, <a href="/A033026/b033026.txt">Table of n, a(n) for n = 1..1000</a>

%t Select[Range[10000], Min[Length/@Split[IntegerDigits[#, 13]]]>1&] (* _Vincenzo Librandi_, Feb 05 2014 *)

%K nonn,base

%O 1,1

%A _Clark Kimberling_