A124501 - cp's OEIS frontend

A124501 Number of 1-2-3-4-5-6 trees with n edges and with thinning limbs. A 1-2-3-4-5-6 tree is an ordered tree with vertices of outdegree at most 6. A rooted tree with thinning limbs is such that if a node has k children, all its children have at most k children.

n	a(n)
0	1
1	1
2	2
3	4
4	10
5	25
6	68
7	186
8	522
9	1479
10	4246
11	12289
12	35872
13	105411
14	311662
15	926270
16	2765778
17	8292296
18	24953437
19	75338686
20	228140842
21	692733127
22	2108652750
23	6433255041
24	19668210742
25	60247367313
26	184879648441
27	568281131800

[1, 1, 2, 4, 10, 25, 68, 186, 522, 1479, 4246, 12289, 35872, 105411, 311662, 926270, 2765778, 8292296, 24953437, 75338686, 228140842, 692733127, 2108652750, 6433255041, 19668210742, 60247367313, 184879648441, 568281131800]

cp's OEIS Frontend

A124501 Number of 1-2-3-4-5-6 trees with n edges and with thinning limbs. A 1-2-3-4-5-6 tree is an ordered tree with vertices of outdegree at most 6. A rooted tree with thinning limbs is such that if a node has k children, all its children have at most k children.

Table of values

List of values