A180021 Second differences of sequence A180005.

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

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

Cf. 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