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A117005
a(n) = A117000(n) - A117001(n).
0
1, 2, 2, 2, 2, 2, 2, 2, -1, 2, 2, -4, 2, 2, -4, 2, 2, -4, 2, 2, -4, 2, 2, -4, -3, 2, -4, 2, 2, -14, 2, 2, -4, 2, -8, -4, 2, 2, -4, -8, 2, -4, 2, 2, -14, 2, 2, -4, 9, -8, -4, 2, 2, -4, -8, 16, -4, 2, 2, -14, 2, 2, 10, 2, -8, -4, 2, 2, -4, 6, 2, -4, 2, 2, -14, 2, 16, -4, 2, -8, 5, 2, 2, 10, -8, 2, -4, 2, 2, 4, 16, 2, -4, 2, -8, -4, 2, 16, 14, -8
OFFSET
1,2
REFERENCES
H. J. S. Smith, Report on the Theory of Numbers, reprinted in Vol. 1 of his Collected Math. Papers, Chelsea, NY, 1979, see p. 322.
CROSSREFS
Sequence in context: A347622 A297034 A190311 * A263204 A194322 A052010
KEYWORD
sign
AUTHOR
N. J. A. Sloane, Apr 15 2006
STATUS
approved