A049340 - cp's OEIS frontend

A049340 Triangle read by rows: T(n,k) is the number of planar graphs with n >= 1 nodes and 0 <= k <= binomial(n,2) edges, all degrees even.

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

[1, 1, 0, 1, 0, 0, 1, 1, 0, 0, 1, 1, 0, 0, 1, 0, 0, 1, 1, 1, 1, 1, 0, 0, 0, 1, 0, 0, 1, 1, 1, 3, 2, 2, 1, 1, 0, 1, 0, 0, 0, 1, 0, 0, 1, 1, 1, 3, 4, 4, 6, 5, 5, 3, 2, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 1, 1, 1, 3, 4, 7, 9, 15, 17, 22, 14, 16, 5, 4, 0, 1, 0, 0, 0]

cp's OEIS Frontend

A049340 Triangle read by rows: T(n,k) is the number of planar graphs with n >= 1 nodes and 0 <= k <= binomial(n,2) edges, all degrees even.

Table of values

List of values

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

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

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