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 A273159 #19 May 15 2019 13:58:05 %S A273159 0,7,16,25,34,43,52,59,61,68,70,77,86,95,106,115,124,133,142,149,151, %T A273159 158,160,167,176,185,194,205,214,223,232,239,241,248,250,257,266,275, %U A273159 284,293,304,313,322,329,331,338,340,347,356,365,374,383,392,399,403,412,419,421,428,430,437,446,455,464 %N A273159 Numbers whose digit sum is divisible by 7. %H A273159 Elana Lessing, <a href="/A273159/b273159.txt">Table of n, a(n) for n = 1..10000</a> %t A273159 Select[Range[0,500],Divisible[Total[IntegerDigits[#]],7]&] (* _Harvey P. Dale_, May 15 2019 *) %o A273159 (PARI) for(n=0,10^3,if(sumdigits(n)%7==0,print1(n,", "))); \\ _Joerg Arndt_, May 17 2016 %Y A273159 Cf. A007953. %K A273159 base,nonn %O A273159 1,2 %A A273159 _Elana Lessing_, May 16 2016