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A290982 The arithmetic function v_5(n,6). 0
1, 1, 2, 0, 3, 1, 4, 3, 5, 2, 6, 2, 7, 5, 8, 3, 9, 3, 10, 7, 11, 4, 12, 4, 13, 9, 14, 5, 15, 5, 16, 11, 17, 5, 18, 6, 19, 13, 20, 7, 21, 7, 22, 15, 23, 8, 24, 8, 25, 17, 26, 9, 27, 10, 28, 19, 29, 10, 30, 10, 31, 21, 32, 10, 33, 11, 34, 23, 35 (list; graph; refs; listen; history; text; internal format)
OFFSET

2,3

REFERENCES

J. Butterworth, Examining the arithmetic function v_g(n,h). Research Papers in Mathematics, B. Bajnok, ed., Gettysburg College, Vol. 8 (2008).

LINKS

Table of n, a(n) for n=2..70.

Bela Bajnok, Additive Combinatorics: A Menu of Research Problems, arXiv:1705.07444 [math.NT], May 2017. See Table in Section 1.6.1.

MATHEMATICA

v[g_, n_, h_] := (d = Divisors[n]; Max[(Floor[(d - 1 - GCD[d, g])/h] + 1)*n/d]); Table[v[5, n, 6], {n, 2, 70}]

a[n_]:=n Max[Table[(Floor[(d - 1 - GCD[d, 5])/6] + 1)/d, {d, Divisors[n]}]]; Table[a[n], {n, 2, 100}] (* Vincenzo Librandi, Aug 19 2017 *)

CROSSREFS

Cf. A289435, A289436, A289437, A289438, A289439, A289440, A289441.

Sequence in context: A226649 A053445 A175990 * A162517 A180876 A162170

Adjacent sequences:  A290979 A290980 A290981 * A290983 A290984 A290985

KEYWORD

nonn

AUTHOR

Robert Price, Aug 16 2017

STATUS

approved

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Last modified June 25 18:30 EDT 2019. Contains 324353 sequences. (Running on oeis4.)