A328921 - cp's OEIS frontend

A328921 Triangle read by rows: T(n,k) = number of vertex labeled connected Goldstone diagrams with n interactions and k external potentials.

n	a(n)
0	1
1	2
2	1
3	20
4	8
5	1
6	592
7	240
8	36
9	2
10	33888
11	14208
12	2400
13	192
14	6
15	3134208
16	1355520
17	248640
18	24000
19	1200
20	24
21	423974400
22	188052480
23	36599040
24	3978240
25	252000
26	8640
27	120
28	78722795520
29	35613849600
30	7240020480
31	853977600
32	62657280
33	2822400
34	70560
35	720
36	19193652817920
37	8816953098240
38	1851920179200

[1, 2, 1, 20, 8, 1, 592, 240, 36, 2, 33888, 14208, 2400, 192, 6, 3134208, 1355520, 248640, 24000, 1200, 24, 423974400, 188052480, 36599040, 3978240, 252000, 8640, 120, 78722795520, 35613849600, 7240020480, 853977600, 62657280, 2822400, 70560, 720, 19193652817920, 8816953098240, 1851920179200]

cp's OEIS Frontend

A328921 Triangle read by rows: T(n,k) = number of vertex labeled connected Goldstone diagrams with n interactions and k external potentials.

Table of values

List of values