A328682 - cp's OEIS frontend

A328682 Array read by antidiagonals: T(n,r) is the number of connected r-regular loopless multigraphs on n unlabeled nodes.

n	a(n)
0	1
1	1
2	1
3	1
4	0
5	0
6	1
7	0
8	1
9	0
10	1
11	0
12	1
13	0
14	0
15	1
16	0
17	1
18	1
19	0
20	0
21	1
22	0
23	1
24	0
25	1
26	0
27	0
28	1
29	0
30	1
31	1
32	2
33	1
34	0
35	0
36	1
37	0
38	1
39	0
40	3
41	0
42	1
43	0
44	0
45	1
46	0
47	1
48	1
49	4
50	6
51	6
52	1
53	0
54	0
55	1
56	0
57	1
58	0
59	6
60	0
61	19
62	0
63	1
64	0
65	0
66	1
67	0
68	1
69	1
70	7
71	15
72	49
73	50
74	20
75	1
76	0
77	0
78	1
79	0
80	1
81	0
82	9
83	0
84	120
85	0
86	204
87	0
88	1
89	0
90	0
91	1
92	0
93	1
94	1
95	11
96	36
97	263
98	933
99	1689
100	832
101	91
102	1
103	0
104	0
105	1
106	0
107	1
108	0
109	13
110	0
111	571
112	0
113	13303
114	0
115	4330
116	0
117	1
118	0
119	0
120	1
121	0
122	1
123	1
124	15
125	72
126	1149
127	12465
128	90614
129	252207
130	187392
131	25227
132	509
133	1
134	0
135	0

[1, 1, 1, 1, 0, 0, 1, 0, 1, 0, 1, 0, 1, 0, 0, 1, 0, 1, 1, 0, 0, 1, 0, 1, 0, 1, 0, 0, 1, 0, 1, 1, 2, 1, 0, 0, 1, 0, 1, 0, 3, 0, 1, 0, 0, 1, 0, 1, 1, 4, 6, 6, 1, 0, 0, 1, 0, 1, 0, 6, 0, 19, 0, 1, 0, 0, 1, 0, 1, 1, 7, 15, 49, 50, 20, 1, 0, 0, 1, 0, 1, 0, 9, 0, 120, 0, 204, 0, 1, 0, 0, 1, 0, 1, 1, 11, 36, 263, 933, 1689, 832, 91, 1, 0, 0, 1, 0, 1, 0, 13, 0, 571, 0, 13303, 0, 4330, 0, 1, 0, 0, 1, 0, 1, 1, 15, 72, 1149, 12465, 90614, 252207, 187392, 25227, 509, 1, 0, 0]

cp's OEIS Frontend

A328682 Array read by antidiagonals: T(n,r) is the number of connected r-regular loopless multigraphs on n unlabeled nodes.

Table of values

List of values