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 A291474 #4 Aug 24 2017 12:56:27
%S A291474 13,13,13,12,13,13,7,8,9,10,11,12,13,7,13,8,13,9,13,10,7,11,13,8,13,
%T A291474 13,9,7,13,10,13,8,11,13,7,9,13,13,13,8,13,7,13,11,9,13,13,8,7,10,13,
%U A291474 12,13,9,11,7,13,13,13,10,13,13,7,8,13,11,13,12,13,7
%N A291474 The arithmetic function u(n,7,2).
%H A291474 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 A291474 u[n_, m_, h_] := (d = Divisors[n]; Min[(h*Ceiling[m/d] - h + 1)*d]); Table[u[n, 7, 2], {n, 1, 70}]
%Y A291474 Cf. A289435, A289436, A289437, A289438, A289439, A289440, A289441.
%K A291474 nonn
%O A291474 1,1
%A A291474 _Robert Price_, Aug 24 2017