|
Search: id:A058521
|
|
|
| A058521 |
|
B-trees of order 5 with n labeled leaves. |
|
+0
3
|
|
| 1, 1, 1, 2, 3, 4, 7, 11, 20, 36, 67, 121, 215, 377, 657, 1154, 2045, 3666, 6628, 12063, 22079, 40642, 75264, 140191, 262457, 493297, 929703, 1754941, 3314509, 6258052, 11803995, 22232306, 41801393, 78453563, 146987053, 274957984
(list; graph; listen)
|
|
|
OFFSET
|
1,4
|
|
|
LINKS
|
Index entries for sequences related to rooted trees
|
|
MAPLE
|
spec := [ B, {B=Union(Z, Subst(M, B)), M=Union(Prod(Z, Z), Prod(Z, Z, Z), Prod(Z$4), Prod(Z$5))} ]: [seq(combstruct[count](spec, size=n), n=1..40)];
|
|
CROSSREFS
|
Cf. A014535, A037026.
Adjacent sequences: A058518 A058519 A058520 this_sequence A058522 A058523 A058524
Sequence in context: A080074 A018064 A107481 this_sequence A116628 A140463 A073147
|
|
KEYWORD
|
nonn
|
|
AUTHOR
|
njas, Dec 21 2000
|
|
|
Search completed in 0.002 seconds
|
