0,5
Table of n, a(n) for n=0..43.
E. M. Rains and N. J. A. Sloane, On Cayley's Enumeration of Alkanes (or 4-Valent Trees), J. Integer Sequences, Vol. 2 (1999), Article 99.1.1.
Index entries for sequences related to rooted trees
Sequence in context: A007782 A035501 A024204 * A062425 A121386 A007777
Adjacent sequences: A036638 A036639 A036640 * A036642 A036643 A036644
nonn,fini,full
N. J. A. Sloane.
approved