A235114 - cp's OEIS frontend

A235114 Irregular triangle read by rows: T(n,k) = number of independent vertex subsets of size k of the graph g_n obtained by attaching two pendant edges to each vertex of the star graph S_n (having n vertices).

n	a(n)
0	1
1	1
2	3
3	1
4	1
5	6
6	10
7	6
8	1
9	1
10	9
11	28
12	40
13	28
14	9
15	1
16	1
17	12
18	55
19	129
20	170
21	129
22	55
23	12
24	1
25	1
26	15
27	91
28	300
29	597
30	748
31	597
32	300
33	91
34	15
35	1
36	1
37	18
38	136
39	580
40	1560
41	2783
42	3368
43	2783
44	1560
45	580
46	136
47	18
48	1
49	1
50	21
51	190
52	996
53	3391
54	7923
55	13067
56	15418
57	13067
58	7923
59	3391
60	996
61	190
62	21
63	1

[1, 1, 3, 1, 1, 6, 10, 6, 1, 1, 9, 28, 40, 28, 9, 1, 1, 12, 55, 129, 170, 129, 55, 12, 1, 1, 15, 91, 300, 597, 748, 597, 300, 91, 15, 1, 1, 18, 136, 580, 1560, 2783, 3368, 2783, 1560, 580, 136, 18, 1, 1, 21, 190, 996, 3391, 7923, 13067, 15418, 13067, 7923, 3391, 996, 190, 21, 1]

cp's OEIS Frontend

A235114 Irregular triangle read by rows: T(n,k) = number of independent vertex subsets of size k of the graph g_n obtained by attaching two pendant edges to each vertex of the star graph S_n (having n vertices).

Table of values

List of values