A344379 - cp's OEIS frontend

A344379 Triangle read by rows: T(n,k) is the number of labeled 3-regular digraphs (multiple arcs and loops allowed) on n nodes with k components.

n	a(n)
1	1
2	3
3	1
4	45
5	9
6	1
7	1782
8	207
9	18
10	1
11	142164
12	10260
13	585
14	30
15	1
16	19943830
17	953424
18	35235
19	1305
20	45
21	1
22	4507660380
23	151369792
24	3731049
25	93555
26	2520
27	63
28	1
29	1540185346560
30	38205961380
31	657600076
32	11122209
33	211680
34	4410
35	84
36	1
37	757560406751120
38	14455803484728

[1, 3, 1, 45, 9, 1, 1782, 207, 18, 1, 142164, 10260, 585, 30, 1, 19943830, 953424, 35235, 1305, 45, 1, 4507660380, 151369792, 3731049, 93555, 2520, 63, 1, 1540185346560, 38205961380, 657600076, 11122209, 211680, 4410, 84, 1, 757560406751120, 14455803484728]

cp's OEIS Frontend

A344379 Triangle read by rows: T(n,k) is the number of labeled 3-regular digraphs (multiple arcs and loops allowed) on n nodes with k components.

Table of values

List of values