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 A291475 #4 Aug 24 2017 12:56:33
%S A291475 19,19,19,16,19,19,7,8,9,10,11,12,13,7,15,8,17,9,19,10,7,11,19,8,19,
%T A291475 13,9,7,19,10,19,8,11,17,7,9,19,19,13,8,19,7,19,11,9,19,19,8,7,10,17,
%U A291475 13,19,9,11,7,19,19,19,10,19,19,7,8,13,11,19,16,19,7
%N A291475 The arithmetic function u(n,7,3).
%H A291475 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 1.6.3.
%t A291475 u[n_, m_, h_] := (d = Divisors[n]; Min[(h*Ceiling[m/d] - h + 1)*d]); Table[u[n, 7, 3], {n, 1, 70}]
%Y A291475 Cf. A289435, A289436, A289437, A289438, A289439, A289440, A289441.
%K A291475 nonn
%O A291475 1,1
%A A291475 _Robert Price_, Aug 24 2017