A068933 - cp's OEIS frontend

A068933 Triangular array D(n, r) = number of disconnected r-regular graphs with n nodes, 0 <= r < n.

n	a(n)
1	0
2	1
3	0
4	1
5	0
6	0
7	1
8	1
9	0
10	0
11	1
12	0
13	0
14	0
15	0
16	1
17	1
18	1
19	0
20	0
21	0
22	1
23	0
24	1
25	0
26	0
27	0
28	0
29	1
30	1
31	2
32	1
33	0
34	0
35	0
36	0
37	1
38	0
39	3
40	0
41	0
42	0
43	0
44	0
45	0
46	1
47	1
48	4
49	2
50	1
51	0
52	0
53	0
54	0
55	0
56	1
57	0
58	5
59	0
60	1
61	0
62	0
63	0
64	0
65	0
66	0
67	1
68	1
69	8
70	9
71	3
72	1
73	0
74	0
75	0
76	0
77	0
78	0
79	1
80	0
81	9
82	0
83	8
84	0
85	0
86	0
87	0
88	0
89	0
90	0
91	0
92	1
93	1
94	12
95	31
96	25
97	3
98	1
99	0
100	0
101	0
102	0
103	0

[0, 1, 0, 1, 0, 0, 1, 1, 0, 0, 1, 0, 0, 0, 0, 1, 1, 1, 0, 0, 0, 1, 0, 1, 0, 0, 0, 0, 1, 1, 2, 1, 0, 0, 0, 0, 1, 0, 3, 0, 0, 0, 0, 0, 0, 1, 1, 4, 2, 1, 0, 0, 0, 0, 0, 1, 0, 5, 0, 1, 0, 0, 0, 0, 0, 0, 1, 1, 8, 9, 3, 1, 0, 0, 0, 0, 0, 0, 1, 0, 9, 0, 8, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 12, 31, 25, 3, 1, 0, 0, 0, 0, 0]

cp's OEIS Frontend

A068933 Triangular array D(n, r) = number of disconnected r-regular graphs with n nodes, 0 <= r < n.

Table of values

List of values

n	a(n)
1	0
2	1
3	0
4	1
5	0
6	0
7	1
8	1
9	0
10	0
11	1
12	0
13	0
14	0
15	0
16	1
17	1
18	1
19	0
20	0
21	0
22	1
23	0
24	1
25	0
26	0
27	0
28	0
29	1
30	1
31	2
32	1
33	0
34	0
35	0
36	0
37	1
38	0
39	3
40	0
41	0
42	0
43	0
44	0
45	0
46	1
47	1
48	4
49	2
50	1
51	0
52	0
53	0
54	0
55	0
56	1
57	0
58	5
59	0
60	1
61	0
62	0
63	0
64	0
65	0
66	0
67	1
68	1
69	8
70	9
71	3
72	1
73	0
74	0
75	0
76	0
77	0
78	0
79	1
80	0
81	9
82	0
83	8
84	0
85	0
86	0
87	0
88	0
89	0
90	0
91	0
92	1
93	1
94	12
95	31
96	25
97	3
98	1
99	0
100	0
101	0
102	0
103	0

n	a(n)
1	0
2	1
3	0
4	1
5	0
6	0
7	1
8	1
9	0
10	0
11	1
12	0
13	0
14	0
15	0
16	1
17	1
18	1
19	0
20	0
21	0
22	1
23	0
24	1
25	0
26	0
27	0
28	0
29	1
30	1
31	2
32	1
33	0
34	0
35	0
36	0
37	1
38	0
39	3
40	0
41	0
42	0
43	0
44	0
45	0
46	1
47	1
48	4
49	2
50	1
51	0
52	0
53	0
54	0
55	0
56	1
57	0
58	5
59	0
60	1
61	0
62	0
63	0
64	0
65	0
66	0
67	1
68	1
69	8
70	9
71	3
72	1
73	0
74	0
75	0
76	0
77	0
78	0
79	1
80	0
81	9
82	0
83	8
84	0
85	0
86	0
87	0
88	0
89	0
90	0
91	0
92	1
93	1
94	12
95	31
96	25
97	3
98	1
99	0
100	0
101	0
102	0
103	0

n	a(n)
1	0
2	1
3	0
4	1
5	0
6	0
7	1
8	1
9	0
10	0
11	1
12	0
13	0
14	0
15	0
16	1
17	1
18	1
19	0
20	0
21	0
22	1
23	0
24	1
25	0
26	0
27	0
28	0
29	1
30	1
31	2
32	1
33	0
34	0
35	0
36	0
37	1
38	0
39	3
40	0
41	0
42	0
43	0
44	0
45	0
46	1
47	1
48	4
49	2
50	1
51	0
52	0
53	0
54	0
55	0
56	1
57	0
58	5
59	0
60	1
61	0
62	0
63	0
64	0
65	0
66	0
67	1
68	1
69	8
70	9
71	3
72	1
73	0
74	0
75	0
76	0
77	0
78	0
79	1
80	0
81	9
82	0
83	8
84	0
85	0
86	0
87	0
88	0
89	0
90	0
91	0
92	1
93	1
94	12
95	31
96	25
97	3
98	1
99	0
100	0
101	0
102	0
103	0