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A291326
The arithmetic function v+-(n,7).
0
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, 3, 15, 5, 16, 11, 17, 7, 18, 5, 19, 13, 20, 5, 21, 5, 22, 15, 23, 7, 24, 7, 25, 17, 26, 7, 27, 11, 28, 19, 29, 9, 30, 9, 31, 21, 32, 13, 33, 9, 34, 23, 35
OFFSET
2,3
LINKS
Bela Bajnok, Additive Combinatorics: A Menu of Research Problems, arXiv:1705.07444 [math.NT], May 2017. See Section 1.6.2.
MATHEMATICA
vpm[n_, h_] := (d = Divisors[n]; Max[(2*Floor[(d - 2)/(2*h)] + 1)*n/d]); Table[vpm[n, 7], {n, 2, 70}]
KEYWORD
nonn
AUTHOR
Robert Price, Aug 22 2017
STATUS
approved