|
| |
|
|
A063692
|
|
Number of 2-trees rooted at a triangle with two similar edges.
|
|
0
| |
|
|
1, 2, 2, 7, 11, 25, 43, 106, 180, 453, 797, 2023, 3632, 9328, 16960, 44036, 80989, 211815, 393098, 1034958, 1934813, 5121356, 9633260, 25615432, 48433926, 129289382, 245554773, 657691061, 1253974468, 3368475942, 6444250241
(list; graph; refs; listen; history; internal format)
|
|
|
|
OFFSET
| 2,2
|
|
|
REFERENCES
| F. Harary and E. M. Palmer, Graphical Enumeration, Academic Press, NY, 1973, p. 76, Eq. (3.5.16).
|
|
|
CROSSREFS
| Cf. A005750, A058870, A058866, A054581.
Sequence in context: A094116 A079476 A005298 * A123209 A123604 A024309
Adjacent sequences: A063689 A063690 A063691 * A063693 A063694 A063695
|
|
|
KEYWORD
| nonn
|
|
|
AUTHOR
| Vladeta Jovovic (vladeta(AT)eunet.rs), Aug 23 2001
|
| |
|
|
