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A112081
A112080(n)/2.
1
0, 1, -1, 0, 2, 0, 4, -1, 0, 0, 0, 6, -3, 0, 6, 0, 1, -1, 0, -3, 0, 9, -3, 0, 0, 0, 1, -3, 0, -2, 0, 1, -1, 0, 9, 0, 1, -1, 0, 12, 0, 3, -1, 0, 0, 0, 3, -4, 0, 2, 0, 1, -1, 0, -3, 0, 16, -3, 0, 0, 0, 1, -3, 0, -5, 0, 1, -1, 0, 14, 0, 1, -1, 0, 2, 0, 19, -1, 0, 0, 0, 3, -3, 0, 2, 0, 1, -1, 0
OFFSET
1,5
CROSSREFS
Sequence in context: A262589 A019215 A326799 * A265158 A366907 A210444
KEYWORD
sign
AUTHOR
Antti Karttunen, Aug 27 2005
STATUS
approved