Thanks to everyone who made a donation during our annual appeal! To see the list of donors, or make a donation, see the OEIS Foundation home page.
Table of n, a(n) for n=0..38.
Eric Weisstein's World of Mathematics, Squarefree Word
a(n) = A006156(n)*2/3 for n>1 [Corrected by Rémy Sigrist, Aug 19 2020].
Cf. A088952, A007089.
Sequence in context: A229990 A147620 A195746 * A281612 A025034 A145722
Adjacent sequences: A088950 A088951 A088952 * A088954 A088955 A088956
Reinhard Zumkeller, Oct 25 2003