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 A291426 #4 Aug 23 2017 23:40:41
%S A291426 16,12,16,4,5,6,7,4,9,5,11,4,13,7,5,4,16,6,16,4,7,11,16,4,5,12,9,4,16,
%T A291426 5,16,4,11,12,5,4,16,12,13,4,16,6,16,4,5,12,16,4,7,5,16,4,16,6,5,4,16,
%U A291426 12,16,4,16,12,7,4,5,6,16,4,16,5
%N A291426 The arithmetic function u(n,4,5).
%H A291426 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 A291426 u[n_, m_, h_] := (d = Divisors[n]; Min[(h*Ceiling[m/d] - h + 1)*d]); Table[u[n, 4, 5], {n, 1, 70}]
%Y A291426 Cf. A289435, A289436, A289437, A289438, A289439, A289440, A289441.
%K A291426 nonn
%O A291426 1,1
%A A291426 _Robert Price_, Aug 23 2017