A297877 - cp's OEIS frontend

A297877 Triangle T(n,k) read by rows, giving number of bipartite graphs with n nodes (n >= 0) and k edges (0 <= k <= floor(n/2*n/2)).

n	a(n)
0	1
1	1
2	1
3	1
4	1
5	1
6	1
7	1
8	1
9	2
10	2
11	1
12	1
13	1
14	2
15	3
16	4
17	1
18	1
19	1
20	1
21	2
22	4
23	7
24	8
25	6
26	3
27	2
28	1
29	1
30	1
31	2
32	4
33	8
34	13
35	19
36	14
37	13
38	7
39	4
40	1
41	1
42	1
43	1
44	2
45	4
46	9
47	16
48	32
49	45
50	52
51	48
52	40
53	24
54	16
55	7
56	3
57	2
58	1
59	1
60	1
61	2
62	4
63	9
64	17
65	38
66	70
67	120
68	150
69	179
70	164
71	143
72	94
73	63
74	32
75	19
76	7
77	4
78	1
79	1
80	1
81	1
82	2
83	4
84	9
85	18
86	41
87	85
88	181
89	324
90	500
91	659

[1, 1, 1, 1, 1, 1, 1, 1, 1, 2, 2, 1, 1, 1, 2, 3, 4, 1, 1, 1, 1, 2, 4, 7, 8, 6, 3, 2, 1, 1, 1, 2, 4, 8, 13, 19, 14, 13, 7, 4, 1, 1, 1, 1, 2, 4, 9, 16, 32, 45, 52, 48, 40, 24, 16, 7, 3, 2, 1, 1, 1, 2, 4, 9, 17, 38, 70, 120, 150, 179, 164, 143, 94, 63, 32, 19, 7, 4, 1, 1, 1, 1, 2, 4, 9, 18, 41, 85, 181, 324, 500, 659]

cp's OEIS Frontend

A297877 Triangle T(n,k) read by rows, giving number of bipartite graphs with n nodes (n >= 0) and k edges (0 <= k <= floor(n/2*n/2)).

Table of values

List of values

n	a(n)
0	1
1	1
2	1
3	1
4	1
5	1
6	1
7	1
8	1
9	2
10	2
11	1
12	1
13	1
14	2
15	3
16	4
17	1
18	1
19	1
20	1
21	2
22	4
23	7
24	8
25	6
26	3
27	2
28	1
29	1
30	1
31	2
32	4
33	8
34	13
35	19
36	14
37	13
38	7
39	4
40	1
41	1
42	1
43	1
44	2
45	4
46	9
47	16
48	32
49	45
50	52
51	48
52	40
53	24
54	16
55	7
56	3
57	2
58	1
59	1
60	1
61	2
62	4
63	9
64	17
65	38
66	70
67	120
68	150
69	179
70	164
71	143
72	94
73	63
74	32
75	19
76	7
77	4
78	1
79	1
80	1
81	1
82	2
83	4
84	9
85	18
86	41
87	85
88	181
89	324
90	500
91	659

n	a(n)
0	1
1	1
2	1
3	1
4	1
5	1
6	1
7	1
8	1
9	2
10	2
11	1
12	1
13	1
14	2
15	3
16	4
17	1
18	1
19	1
20	1
21	2
22	4
23	7
24	8
25	6
26	3
27	2
28	1
29	1
30	1
31	2
32	4
33	8
34	13
35	19
36	14
37	13
38	7
39	4
40	1
41	1
42	1
43	1
44	2
45	4
46	9
47	16
48	32
49	45
50	52
51	48
52	40
53	24
54	16
55	7
56	3
57	2
58	1
59	1
60	1
61	2
62	4
63	9
64	17
65	38
66	70
67	120
68	150
69	179
70	164
71	143
72	94
73	63
74	32
75	19
76	7
77	4
78	1
79	1
80	1
81	1
82	2
83	4
84	9
85	18
86	41
87	85
88	181
89	324
90	500
91	659

n	a(n)
0	1
1	1
2	1
3	1
4	1
5	1
6	1
7	1
8	1
9	2
10	2
11	1
12	1
13	1
14	2
15	3
16	4
17	1
18	1
19	1
20	1
21	2
22	4
23	7
24	8
25	6
26	3
27	2
28	1
29	1
30	1
31	2
32	4
33	8
34	13
35	19
36	14
37	13
38	7
39	4
40	1
41	1
42	1
43	1
44	2
45	4
46	9
47	16
48	32
49	45
50	52
51	48
52	40
53	24
54	16
55	7
56	3
57	2
58	1
59	1
60	1
61	2
62	4
63	9
64	17
65	38
66	70
67	120
68	150
69	179
70	164
71	143
72	94
73	63
74	32
75	19
76	7
77	4
78	1
79	1
80	1
81	1
82	2
83	4
84	9
85	18
86	41
87	85
88	181
89	324
90	500
91	659