This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.
%I A385296 #15 Jun 25 2025 17:26:00 %S A385296 0,1,2,3,4,5,6,7,8,9,11,18,22,29,33,44,55,66,70,77,81,88,92,99,111, %T A385296 118,181,188,222,229,292,299,333,444,555,666,700,707,770,777,811,818, %U A385296 881,888,922,929,992,999,1111,1118,1181,1188,1811,1818,1881,1888,2222,2229,2292,2299,2922,2929,2992,2999 %N A385296 Numbers whose digits all belong to the same residue class mod 7. %H A385296 Alois P. Heinz, <a href="/A385296/b385296.txt">Table of n, a(n) for n = 1..10280</a> (first 1000 terms from Stefano Spezia) %t A385296 Select[Range[0,3000],Length[DeleteDuplicates[Mod[IntegerDigits[#],7]]] == 1 &] %Y A385296 Similar sequences for other values of the modulo k: A059708 (k=2), A385292 (k=3), A385293 (k=4), A385294 (k=5), A385295 (k=6), this sequence (k=7), A385297 (k=8), A385298 (k=9). %K A385296 nonn,base,look %O A385296 1,3 %A A385296 _Stefano Spezia_, Jun 24 2025