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A067017 Start with a(0)=1, a(1)=4, a(2)=3, a(3)=2; for n>=3, a(n+1) = mex_i (a(i)+a(n-i)), where mex means smallest nonnegative missing number. 2
1, 4, 3, 2, 0, 0, 0, 0, 0, 5, 1, 1, 1, 1, 1, 6, 2, 2, 0, 0, 0, 0, 0, 5, 1, 1, 1, 1, 1, 6, 2, 2, 0, 0, 0, 0, 0, 5, 1, 1, 1, 1, 1, 6, 2, 2, 0, 0, 0, 0, 0, 5, 1, 1, 1, 1, 1, 6, 2, 2, 0, 0, 0, 0, 0, 5, 1, 1, 1, 1, 1, 6, 2, 2, 0, 0, 0, 0, 0, 5, 1, 1, 1, 1, 1, 6, 2, 2, 0, 0, 0, 0, 0, 5, 1, 1, 1, 1, 1, 6, 2, 2, 0, 0, 0 (list; graph; refs; listen; history; internal format)
OFFSET

0,2

REFERENCES

R. K. Guy, Unsolved Problems in Number Theory, E27.

CROSSREFS

Cf. A067016, A067018.

Sequence in context: A154960 A143543 A176863 * A067018 A200233 A100802

Adjacent sequences:  A067014 A067015 A067016 * A067018 A067019 A067020

KEYWORD

nonn,easy

AUTHOR

N. J. A. Sloane (njas(AT)research.att.com), Feb 17 2002

EXTENSIONS

More terms from John W. Layman (layman(AT)math.vt.edu), Feb 20 2002

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Last modified February 14 23:53 EST 2012. Contains 205689 sequences.