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 A290983 #8 Aug 21 2017 13:00:44
%S A290983 0,0,1,1,0,1,2,1,2,2,3,2,2,3,4,3,2,3,5,3,4,4,6,5,4,4,7,5,6,5,8,6,6,7,
%T A290983 9,6,6,6,10,7,6,7,11,9,8,8,12,8,10,9,13,9,8,11,14,9,10,10,15,10,10,10,
%U A290983 16,13,12,11,17,12,14
%N A290983 The arithmetic function v_6(n,6).
%D A290983 J. Butterworth, Examining the arithmetic function v_g(n,h). Research Papers in Mathematics, B. Bajnok, ed., Gettysburg College, Vol. 8 (2008).
%H A290983 Bela Bajnok, <a href="https://arxiv.org/abs/1705.07444">Additive Combinatorics: A Menu of Research Problems</a>, arXiv:1705.07444 [math.NT], May 2017. See Table in Section 1.6.1.
%t A290983 v[g_, n_, h_] := (d = Divisors[n]; Max[(Floor[(d - 1 - GCD[d, g])/h] + 1)*n/d]); Table[v[6, n, 6], {n, 2, 70}]
%t A290983 a[n_]:=n Max[Table[(Floor[(d - 1 - GCD[d, 6])/6] + 1)/d, {d, Divisors[n]}]]; Table[a[n], {n, 2, 100}] (* _Vincenzo Librandi_, Aug 19 2017 *)
%Y A290983 Cf. A289435, A289436, A289437, A289438, A289439, A289440, A289441.
%K A290983 nonn
%O A290983 2,7
%A A290983 _Robert Price_, Aug 16 2017