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A180021 Numbers n that are the second order difference of sequence A180005. 0
3, 1, 3, 0, 2, 1, 2, 2, 0, 3, 0, 2, 2, 1, 1, 2, 1, 2, 1, 2, 1, 2, 1, 1, 2, 1, 2, 1, 2, 1, 1, 2, 1, 2, 2, 0, 2, 2, 1, 2, 0, 3, 1, 1, 2, 1, 1, 2, 2, 1, 1, 2, 1, 2, 1, 2, 1, 1, 2, 1, 2, 1, 2, 1, 2, 1, 1, 2, 1, 2, 1, 2, 1, 1, 2, 2, 1, 1, 2, 1, 2, 1, 1, 2, 2, 0, 3, 0, 3, 0, 2, 2, 1, 1, 2, 1, 2, 1, 2, 1, 1, 2, 2, 0, 3 (list; graph; refs; listen; history; text; internal format)
OFFSET

3,1

COMMENTS

It is conjectured that this sequence is bounded between 0 and 3.

LINKS

Table of n, a(n) for n=3..107.

P. Diaconis and F. Mosteller, Methods of studying coincidences, J. Amer. Statist. Assoc. 84 (1989), pp. 853-861.

CROSSREFS

Second difference of A180005.

Sequence in context: A143353 A127172 A011087 * A091422 A201659 A253625

Adjacent sequences:  A180018 A180019 A180020 * A180022 A180023 A180024

KEYWORD

nonn

AUTHOR

Mario O. Bourgoin (mob(AT)brandeis.edu), Aug 06 2010

STATUS

approved

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Last modified February 16 21:23 EST 2020. Contains 331975 sequences. (Running on oeis4.)