OFFSET
1,6
COMMENTS
The following parity property of this sequence seems interesting: Assume 0 is both positive and negative and let sgn(a(n)) be the sign of a(n). Then apparently sgn(a(n)) = -sgn(a(n+1)) = sgn(a(n+2)) for all n. But sgn(a(2n)) != sgn(a(2m)) for all n,m.
LINKS
Creighton Dement, First 821 terms [after this it alternates 39, -39, 39, -39 forever]
Creighton Dement, Notes on A126626 and A117154
Index entries for linear recurrences with constant coefficients, signature (-1).
CROSSREFS
KEYWORD
AUTHOR
Creighton Dement, Apr 21 2006
STATUS
approved