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A127510 Triangle T(n,k) = k*mobius(n). 2
1, -1, -2, -1, -2, -3, 0, 0, 0, 0, -1, -2, -3, -4, -5, 1, 2, 3, 4, 5, 6, -1, -2, -3, -4, -5, -6, -7, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10 (list; table; graph; refs; listen; history; text; internal format)
OFFSET
1,3
LINKS
FORMULA
T(n,k) = A008683(n)*k.
EXAMPLE
First few rows of the triangle are:
1;
-1, -2;
-1, -2, -3;
0, 0, 0, 0;
-1, -2, -3, -4, -5;
1, 2, 3, 4, 5, 6;
...
MAPLE
A127510 := proc(n, k)
numtheory[mobius](n)*k ;
end proc: # R. J. Mathar, Sep 08 2013
CROSSREFS
Cf. A008683, A000217, A125287 (row sums).
Sequence in context: A092186 A138262 A276990 * A328362 A158810 A129391
KEYWORD
tabl,easy,sign
AUTHOR
Gary W. Adamson, Jan 17 2007
STATUS
approved

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Last modified June 21 09:34 EDT 2024. Contains 373543 sequences. (Running on oeis4.)