|
|
A172354
|
|
n such that the Moebius function take successively, from n, the values -1,0,-1,0,-1,0.
|
|
3
|
|
|
195, 1491, 1547, 1947, 2139, 2715, 2749, 2751, 2847, 2967, 3359, 3615, 3819, 4011, 4013, 4015, 4047, 4155, 4547, 5019, 5449, 5647, 5741, 5779, 6351, 6353, 6355, 6447, 6547, 6563, 6565, 6567, 6947, 6959, 6961, 6963, 7347, 7503, 7545, 7683, 8007, 9339, 10091
(list;
graph;
refs;
listen;
history;
text;
internal format)
|
|
|
OFFSET
|
1,1
|
|
REFERENCES
|
M. Abramowitz and I. A. Stegun, eds., Handbook of Mathematical Functions, National Bureau of Standards Applied Math. Series 55, Tenth Printing, 1972, p. 826.
G. H. Hardy and E. M. Wright, An Introduction to the Theory of Numbers, 5th ed., Oxford Univ. Press, 1979, th. 262 and 287.
|
|
LINKS
|
|
|
MAPLE
|
with(numtheory): for n from 1 to 15000 do; if mobius(n)= -1 and mobius(n+1) = 0 and mobius(n+2)= -1 and mobius(n+3)= 0 and mobius(n+4)= -1 and mobius(n+5) = 0 then print(n); else fi ; od;
|
|
MATHEMATICA
|
SequencePosition[MoebiusMu[Range[11000]], {-1, 0, -1, 0, -1, 0}][[All, 1]] (* Requires Mathematica version 10 or later *) (* Harvey P. Dale, Sep 17 2016 *)
|
|
PROG
|
(PARI) is(n)=moebius(n)<0 && !moebius(n+1) && moebius(n+2)<0 && !moebius(n+3) && moebius(n+4)<0 && !moebius(n+5) \\ Charles R Greathouse IV, Sep 26 2013
|
|
CROSSREFS
|
|
|
KEYWORD
|
nonn
|
|
AUTHOR
|
|
|
EXTENSIONS
|
|
|
STATUS
|
approved
|
|
|
|