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A128017
Expansion of (1+2x+x^2-x^3)/(1-x^2+x^4).
4
1, 2, 2, 1, 1, -1, -1, -2, -2, -1, -1, 1, 1, 2, 2, 1, 1, -1, -1, -2, -2, -1, -1, 1, 1, 2, 2, 1, 1, -1, -1, -2, -2, -1, -1, 1, 1, 2, 2, 1, 1, -1, -1, -2, -2, -1, -1, 1, 1, 2, 2, 1, 1, -1, -1, -2, -2, -1, -1, 1, 1, 2, 2, 1, 1, -1, -1, -2, -2, -1, -1
OFFSET
0,2
COMMENTS
Hankel transform of A128014, A128015, A005717(n+1).
CROSSREFS
Cf. A128016.
Sequence in context: A030614 A328615 A128016 * A096285 A328483 A321856
KEYWORD
easy,sign
AUTHOR
Paul Barry, Feb 11 2007
STATUS
approved