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 A291325 #4 Aug 23 2017 09:43:22
%S A291325 1,1,2,1,3,1,4,3,5,1,6,1,7,5,8,3,9,3,10,7,11,3,12,5,13,9,14,5,15,5,16,
%T A291325 11,17,7,18,5,19,13,20,7,21,7,22,15,23,7,24,7,25,17,26,9,27,11,28,19,
%U A291325 29,9,30,9,31,21,32,13,33,11,34,23,35
%N A291325 The arithmetic function v+-(n,6).
%H A291325 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 Section 1.6.2.
%t A291325 vpm[n_, h_] := (d = Divisors[n]; Max[(2*Floor[(d - 2)/(2*h)] + 1)*n/d]); Table[vpm[n, 6], {n, 2, 70}]
%Y A291325 Cf. A289435, A289436, A289437, A289438, A289439, A289440, A289441, A290988.
%K A291325 nonn
%O A291325 2,3
%A A291325 _Robert Price_, Aug 22 2017