A217763 - cp's OEIS frontend

A217763 Triangular array read by rows: T(n,k) is the number of simple labeled graphs on n nodes with unicyclic components having exactly k nodes with degree 1; n>=3, 0<=k<=n-3.

n	a(n)
3	1
4	3
5	12
6	12
7	90
8	120
9	70
10	600
11	1800
12	1200
13	465
14	4725
15	19530
16	31500
17	12600
18	3507
19	42168
20	211680
21	529200
22	529200
23	141120
24	30016
25	414288
26	2451456
27	7902720
28	13124160
29	8890560
30	1693440
31	286884
32	4460760
33	30413880
34	117573120
35	266716800
36	312439680
37	152409600
38	21772800

[1, 3, 12, 12, 90, 120, 70, 600, 1800, 1200, 465, 4725, 19530, 31500, 12600, 3507, 42168, 211680, 529200, 529200, 141120, 30016, 414288, 2451456, 7902720, 13124160, 8890560, 1693440, 286884, 4460760, 30413880, 117573120, 266716800, 312439680, 152409600, 21772800]

cp's OEIS Frontend

A217763 Triangular array read by rows: T(n,k) is the number of simple labeled graphs on n nodes with unicyclic components having exactly k nodes with degree 1; n>=3, 0<=k<=n-3.

Table of values

List of values