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A255502
Number of terms in n-th order nested Lie bracket.
1
1, 2, 4, 14, 46, 152, 500, 1648, 5506, 18380, 61512, 206028, 691126
OFFSET
0,2
COMMENTS
It would be nice to have a formula.
LINKS
J. Beier, M. Olsen, A not-so-simple Lie bracket expansion, Involve, a Journal of Mathematics, Vol. 7 (2014), No. 5, 647-655 DOI: 10.2140/involve.2014.7.647.
CROSSREFS
Cf. A256030.
Sequence in context: A149848 A149849 A149850 * A149851 A149852 A263740
KEYWORD
nonn,more
AUTHOR
N. J. A. Sloane, Mar 13 2015
STATUS
approved