3,1

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

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.

Second difference of A180005.

Sequence in context: A143353 A127172 A011087 * A091422 A201659 A253625

Adjacent sequences: A180018 A180019 A180020 * A180022 A180023 A180024

nonn

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

approved