1,2
Included for completeness. The definition is somewhat artificial.
E. Angelini, "Jeux de suites", in Dossier Pour La Science, pp. 32-35, Volume 59 (Jeux math'), April/June 2008, Paris.
Table of n, a(n) for n=1..17.
Sequence in context: A117625 A297763 A254962 * A225525 A240395 A009331
Adjacent sequences: A139320 A139321 A139322 * A139324 A139325 A139326
nonn
N. J. A. Sloane, Jun 08 2008
approved