A245518 - cp's OEIS frontend

A245518 Irregular triangle read by rows: T(n,i) = number of alpha-labeled graphs with n edges that do not use the label i, for 1 <= i <= n-1 and n >= 4.

n	a(n)
4	1
5	0
6	1
7	4
8	2
9	2
10	4
11	16
12	12
13	8
14	12
15	16
16	64
17	64
18	40
19	40
20	64
21	64
22	284
23	328
24	236
25	176
26	236
27	328
28	284
29	1360
30	1760
31	1432
32	1000
33	1000
34	1432
35	1760
36	1360
37	7184
38	9928
39	9092
40	6536
41	5312
42	6536
43	9092
44	9928
45	7184

[1, 0, 1, 4, 2, 2, 4, 16, 12, 8, 12, 16, 64, 64, 40, 40, 64, 64, 284, 328, 236, 176, 236, 328, 284, 1360, 1760, 1432, 1000, 1000, 1432, 1760, 1360, 7184, 9928, 9092, 6536, 5312, 6536, 9092, 9928, 7184]

cp's OEIS Frontend

A245518 Irregular triangle read by rows: T(n,i) = number of alpha-labeled graphs with n edges that do not use the label i, for 1 <= i <= n-1 and n >= 4.

Table of values

List of values