A356916 - cp's OEIS frontend

A356916 Irregular triangle A(n, q) = total number of labeled P_4 - free chordal graphs on n vertices and q edges, read by rows; also companion triangle to A058865.

n	a(n)
1	1
2	3
3	3
4	1
5	6
6	15
7	8
8	12
9	6
10	1
11	10
12	45
13	60
14	75
15	60
16	80
17	30
18	30
19	10
20	1
21	15
22	105
23	275
24	420
25	516
26	625
27	465
28	540
29	495
30	276
31	255
32	80
33	60
34	15
35	1
36	21
37	210
38	910
39	2100
40	3192
41	4767
42	5355
43	4830
44	5845
45	5061
46	5397
47	4725
48	2730
49	2625
50	1932
51	882
52	630
53	175
54	105
55	21
56	1

[1, 3, 3, 1, 6, 15, 8, 12, 6, 1, 10, 45, 60, 75, 60, 80, 30, 30, 10, 1, 15, 105, 275, 420, 516, 625, 465, 540, 495, 276, 255, 80, 60, 15, 1, 21, 210, 910, 2100, 3192, 4767, 5355, 4830, 5845, 5061, 5397, 4725, 2730, 2625, 1932, 882, 630, 175, 105, 21, 1]

cp's OEIS Frontend

A356916 Irregular triangle A(n, q) = total number of labeled P_4 - free chordal graphs on n vertices and q edges, read by rows; also companion triangle to A058865.

Table of values

List of values