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A156248 a(n)=sum(k=1,n,(-1)^k*A000002(2*k)) 0
-2, -1, -3, -1, -2, 0, -1, 0, -2, -1, -2, 0, -2, -1, -3, -2, -3, -1, -3, -2, -4, -2, -3, -2, -4, -3, -5, -3, -4, -2, -4, -3, -5, -4, -5, -3, -5, -4, -5, -3, -4, -2, -3, -2, -4, -2, -3, -1, -2, 0, -2, -1, -2, 0, -2, -1, -3, -2, -3, -1, -2, -1, -3, -2, -3, -1, -2, 0, -2, -1, -3 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
LINKS
CROSSREFS
Sequence in context: A129761 A319299 A207031 * A324817 A106406 A123864
KEYWORD
sign
AUTHOR
Benoit Cloitre, Feb 07 2009
STATUS
approved

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Last modified May 16 10:52 EDT 2024. Contains 372552 sequences. (Running on oeis4.)