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A020945 a(2n+1) = |a(2n) - a(2n-1)|, a(2n) = a(n) + a(n-1). 4
1, 1, 0, 2, 2, 1, 1, 2, 1, 4, 3, 3, 0, 2, 2, 3, 1, 3, 2, 5, 3, 7, 4, 6, 2, 3, 1, 2, 1, 4, 3, 5, 2, 4, 2, 4, 2, 5, 3, 7, 4, 8, 4, 10, 6, 11, 5, 10, 5, 8, 3, 5, 2, 4, 2, 3, 1, 3, 2, 5, 3, 7, 4, 8, 4, 7, 3, 6, 3, 6, 3, 6, 3, 6, 3, 7, 4, 8, 4, 10, 6, 11, 5, 12, 7, 12, 5, 14, 9, 16, 7, 17, 10, 16 (list; graph; refs; listen; history; internal format)
OFFSET

1,4

CROSSREFS

Cf. A020947-A020950.

Sequence in context: A112933 A088427 A104482 * A016429 A131852 A139352

Adjacent sequences:  A020942 A020943 A020944 * A020946 A020947 A020948

KEYWORD

nonn

AUTHOR

Clark Kimberling (ck6(AT)evansville.edu)

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Last modified February 17 06:24 EST 2012. Contains 205994 sequences.