A058875 - cp's OEIS frontend

A058875 Triangle T(n,k) = C_n(k)/2^(k*(k-1)/2) where C_n(k) = number of k-colored labeled graphs with n nodes (n >= 1, 1 <= k <= n).

n	a(n)
1	1
2	1
3	1
4	1
5	6
6	1
7	1
8	40
9	24
10	1
11	1
12	360
13	640
14	80
15	1
16	1
17	4576
18	24000
19	7040
20	240
21	1
22	1
23	82656
24	1367296
25	878080
26	62720
27	672
28	1
29	1
30	2122240
31	122056704
32	169967616
33	23224320
34	487424
35	1792
36	1
37	1
38	77366400
39	17282252800
40	53247344640
41	13440516096

[1, 1, 1, 1, 6, 1, 1, 40, 24, 1, 1, 360, 640, 80, 1, 1, 4576, 24000, 7040, 240, 1, 1, 82656, 1367296, 878080, 62720, 672, 1, 1, 2122240, 122056704, 169967616, 23224320, 487424, 1792, 1, 1, 77366400, 17282252800, 53247344640, 13440516096]

cp's OEIS Frontend

A058875 Triangle T(n,k) = C_n(k)/2^(k*(k-1)/2) where C_n(k) = number of k-colored labeled graphs with n nodes (n >= 1, 1 <= k <= n).

Table of values

List of values