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A168393 Moebius function of interprimes (A024675). 0
0, 1, 0, 0, 1, 0, 1, 1, -1, 1, 1, -1, 0, 0, 0, 0, 0, 1, 0, 0, 0, 1, 1, 0, -1, -1, 0, 1, 0, 1, 1, -1, 0, 0, -1, 0, -1, -1, 0, 0, -1, 0, -1, 0, 1, 1, 0, 0, -1, 0, 0, -1, 1, 0, -1, 0, 1, 0, -1, 0, 0, 1, 0, 0, 0, 1, 0, 0, 0, 0, 0, -1, 0, 1, 1, 1, -1, 0, 0, 0, -1, 0, 0, 0, 1, 1, 0, 1, -1, 1, -1, 1, 0, 1, -1, 1 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
LINKS
Table of n, a(n) for n=1..96.
MAPLE
ts_fip:=proc(n) local i, an: an:=[ ]: for i from 2 to n do an:=[ op(an), numtheory[mobius]((ithprime(i)+ithprime(i+1))/2) ]: od: RETURN(an) end: ts_fip(500);
CROSSREFS
Cf. A008683.
Sequence in context: A372544 A104893 A104894 * A071986 A079944 A059652
Adjacent sequences: A168390 A168391 A168392 * A168394 A168395 A168396
KEYWORD
sign
AUTHOR
Jani Melik, Nov 24 2009
STATUS
approved

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Last modified August 29 18:55 EDT 2024. Contains 375518 sequences. (Running on oeis4.)