A241669 - cp's OEIS frontend

A241669 Irregular triangular array read by rows: T(n,k) is the number of 2-colored simple labeled graphs on n nodes that have exactly k edges, 0<=k<=A002620(n), n>=1.

n	a(n)
1	0
2	2
3	2
4	6
5	12
6	6
7	14
8	48
9	60
10	32
11	6
12	30
13	160
14	360
15	440
16	310
17	120
18	20
19	62
20	480
21	1680
22	3480
23	4680
24	4212
25	2520
26	960
27	210
28	20
29	126
30	1344
31	6720
32	20720
33	43680
34	66108
35	73514
36	60480
37	36540
38	15820
39	4662
40	840
41	70
42	254
43	3584
44	24192
45	103040
46	308560
47	686784
48	1172976
49	1565888
50	1649340
51	1373680
52	900592
53	459312
54	178416
55	50960
56	10080
57	1232
58	70
59	510
60	9216
61	80640
62	451584
63	1808352
64	5491584
65	13102992
66	25128720
67	39312018
68	50638224
69	53981928
70	47698560
71	34869744
72	20975472
73	10281672
74	4044096
75	1246644
76	290304
77	48048
78	5040
79	252

[0, 2, 2, 6, 12, 6, 14, 48, 60, 32, 6, 30, 160, 360, 440, 310, 120, 20, 62, 480, 1680, 3480, 4680, 4212, 2520, 960, 210, 20, 126, 1344, 6720, 20720, 43680, 66108, 73514, 60480, 36540, 15820, 4662, 840, 70, 254, 3584, 24192, 103040, 308560, 686784, 1172976, 1565888, 1649340, 1373680, 900592, 459312, 178416, 50960, 10080, 1232, 70, 510, 9216, 80640, 451584, 1808352, 5491584, 13102992, 25128720, 39312018, 50638224, 53981928, 47698560, 34869744, 20975472, 10281672, 4044096, 1246644, 290304, 48048, 5040, 252]

cp's OEIS Frontend

A241669 Irregular triangular array read by rows: T(n,k) is the number of 2-colored simple labeled graphs on n nodes that have exactly k edges, 0<=k<=A002620(n), n>=1.

Table of values

List of values