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 A291428 #4 Aug 23 2017 23:40:56
%S A291428 22,16,22,4,5,6,7,4,9,5,11,4,13,7,5,4,17,6,19,4,7,11,22,4,5,13,9,4,22,
%T A291428 5,22,4,11,16,5,4,22,16,13,4,22,6,22,4,5,16,22,4,7,5,17,4,22,6,5,4,19,
%U A291428 16,22,4,22,16,7,4,5,6,22,4,22,5
%N A291428 The arithmetic function u(n,4,7).
%H A291428 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 A291428 u[n_, m_, h_] := (d = Divisors[n]; Min[(h*Ceiling[m/d] - h + 1)*d]); Table[u[n, 4, 7], {n, 1, 70}]
%Y A291428 Cf. A289435, A289436, A289437, A289438, A289439, A289440, A289441.
%K A291428 nonn
%O A291428 1,1
%A A291428 _Robert Price_, Aug 23 2017