A192031 - cp's OEIS frontend

A192031 Rectangular array read by rows: T(n,k) is the number of unordered pairs of nodes at distance k in the helm graph G(n) obtained from a wheel graph with n spokes by adjoining a pendant edge at each node of the cycle (n>=3, k>=1). The entries in row n are the coefficients of the corresponding Wiener polynomial.

n	a(n)
3	9
4	9
5	3
6	12
7	14
8	8
9	2
10	15
11	20
12	15
13	5
14	18
15	27
16	24
17	9
18	21
19	35
20	35
21	14
22	24
23	44
24	48
25	20
26	27
27	54
28	63
29	27
30	30
31	65
32	80
33	35
34	33
35	77
36	99
37	44
38	36
39	90
40	120
41	54
42	39
43	104
44	143
45	65
46	42
47	119
48	168
49	77
50	45
51	135
52	195
53	90
54	48
55	152
56	224
57	104
58	51
59	170
60	255
61	119
62	54
63	189
64	288
65	135
66	57
67	209
68	323
69	152
70	60
71	230
72	360
73	170

[9, 9, 3, 12, 14, 8, 2, 15, 20, 15, 5, 18, 27, 24, 9, 21, 35, 35, 14, 24, 44, 48, 20, 27, 54, 63, 27, 30, 65, 80, 35, 33, 77, 99, 44, 36, 90, 120, 54, 39, 104, 143, 65, 42, 119, 168, 77, 45, 135, 195, 90, 48, 152, 224, 104, 51, 170, 255, 119, 54, 189, 288, 135, 57, 209, 323, 152, 60, 230, 360, 170]

cp's OEIS Frontend

Table of values

List of values

n	a(n)
3	9
4	9
5	3
6	12
7	14
8	8
9	2
10	15
11	20
12	15
13	5
14	18
15	27
16	24
17	9
18	21
19	35
20	35
21	14
22	24
23	44
24	48
25	20
26	27
27	54
28	63
29	27
30	30
31	65
32	80
33	35
34	33
35	77
36	99
37	44
38	36
39	90
40	120
41	54
42	39
43	104
44	143
45	65
46	42
47	119
48	168
49	77
50	45
51	135
52	195
53	90
54	48
55	152
56	224
57	104
58	51
59	170
60	255
61	119
62	54
63	189
64	288
65	135
66	57
67	209
68	323
69	152
70	60
71	230
72	360
73	170

n	a(n)
3	9
4	9
5	3
6	12
7	14
8	8
9	2
10	15
11	20
12	15
13	5
14	18
15	27
16	24
17	9
18	21
19	35
20	35
21	14
22	24
23	44
24	48
25	20
26	27
27	54
28	63
29	27
30	30
31	65
32	80
33	35
34	33
35	77
36	99
37	44
38	36
39	90
40	120
41	54
42	39
43	104
44	143
45	65
46	42
47	119
48	168
49	77
50	45
51	135
52	195
53	90
54	48
55	152
56	224
57	104
58	51
59	170
60	255
61	119
62	54
63	189
64	288
65	135
66	57
67	209
68	323
69	152
70	60
71	230
72	360
73	170

n	a(n)
3	9
4	9
5	3
6	12
7	14
8	8
9	2
10	15
11	20
12	15
13	5
14	18
15	27
16	24
17	9
18	21
19	35
20	35
21	14
22	24
23	44
24	48
25	20
26	27
27	54
28	63
29	27
30	30
31	65
32	80
33	35
34	33
35	77
36	99
37	44
38	36
39	90
40	120
41	54
42	39
43	104
44	143
45	65
46	42
47	119
48	168
49	77
50	45
51	135
52	195
53	90
54	48
55	152
56	224
57	104
58	51
59	170
60	255
61	119
62	54
63	189
64	288
65	135
66	57
67	209
68	323
69	152
70	60
71	230
72	360
73	170