A193401 - cp's OEIS frontend

A193401 Triangle read by rows: row n contains the coefficients (of the increasing powers of the variable) of the characteristic polynomial of the Laplacian matrix of the rooted tree having Matula-Göbel number n.

n	a(n)
1	0
2	1
3	0
4	-2
5	1
6	0
7	3
8	-4
9	1
10	0
11	3
12	-4
13	1
14	0
15	-4
16	10
17	-6
18	1
19	0
20	-4
21	10
22	-6
23	1
24	0
25	-4
26	9
27	-6
28	1
29	0
30	-4
31	9
32	-6
33	1
34	0
35	5
36	-20
37	21
38	-8
39	1
40	0
41	5
42	-20
43	21
44	-8
45	1
46	0
47	5
48	-20
49	21
50	-8
51	1
52	0
53	5
54	-18
55	20
56	-8
57	1
58	0
59	5
60	-18
61	20
62	-8
63	1
64	0
65	5
66	-18
67	20
68	-8
69	1
70	0
71	-6
72	35
73	-56
74	36
75	-10
76	1
77	0
78	5
79	-16
80	18
81	-8
82	1
83	0
84	5
85	-18
86	20
87	-8
88	1

[0, 1, 0, -2, 1, 0, 3, -4, 1, 0, 3, -4, 1, 0, -4, 10, -6, 1, 0, -4, 10, -6, 1, 0, -4, 9, -6, 1, 0, -4, 9, -6, 1, 0, 5, -20, 21, -8, 1, 0, 5, -20, 21, -8, 1, 0, 5, -20, 21, -8, 1, 0, 5, -18, 20, -8, 1, 0, 5, -18, 20, -8, 1, 0, 5, -18, 20, -8, 1, 0, -6, 35, -56, 36, -10, 1, 0, 5, -16, 18, -8, 1, 0, 5, -18, 20, -8, 1]

cp's OEIS Frontend

A193401 Triangle read by rows: row n contains the coefficients (of the increasing powers of the variable) of the characteristic polynomial of the Laplacian matrix of the rooted tree having Matula-Göbel number n.

Table of values

List of values

n	a(n)
1	0
2	1
3	0
4	-2
5	1
6	0
7	3
8	-4
9	1
10	0
11	3
12	-4
13	1
14	0
15	-4
16	10
17	-6
18	1
19	0
20	-4
21	10
22	-6
23	1
24	0
25	-4
26	9
27	-6
28	1
29	0
30	-4
31	9
32	-6
33	1
34	0
35	5
36	-20
37	21
38	-8
39	1
40	0
41	5
42	-20
43	21
44	-8
45	1
46	0
47	5
48	-20
49	21
50	-8
51	1
52	0
53	5
54	-18
55	20
56	-8
57	1
58	0
59	5
60	-18
61	20
62	-8
63	1
64	0
65	5
66	-18
67	20
68	-8
69	1
70	0
71	-6
72	35
73	-56
74	36
75	-10
76	1
77	0
78	5
79	-16
80	18
81	-8
82	1
83	0
84	5
85	-18
86	20
87	-8
88	1

n	a(n)
1	0
2	1
3	0
4	-2
5	1
6	0
7	3
8	-4
9	1
10	0
11	3
12	-4
13	1
14	0
15	-4
16	10
17	-6
18	1
19	0
20	-4
21	10
22	-6
23	1
24	0
25	-4
26	9
27	-6
28	1
29	0
30	-4
31	9
32	-6
33	1
34	0
35	5
36	-20
37	21
38	-8
39	1
40	0
41	5
42	-20
43	21
44	-8
45	1
46	0
47	5
48	-20
49	21
50	-8
51	1
52	0
53	5
54	-18
55	20
56	-8
57	1
58	0
59	5
60	-18
61	20
62	-8
63	1
64	0
65	5
66	-18
67	20
68	-8
69	1
70	0
71	-6
72	35
73	-56
74	36
75	-10
76	1
77	0
78	5
79	-16
80	18
81	-8
82	1
83	0
84	5
85	-18
86	20
87	-8
88	1

n	a(n)
1	0
2	1
3	0
4	-2
5	1
6	0
7	3
8	-4
9	1
10	0
11	3
12	-4
13	1
14	0
15	-4
16	10
17	-6
18	1
19	0
20	-4
21	10
22	-6
23	1
24	0
25	-4
26	9
27	-6
28	1
29	0
30	-4
31	9
32	-6
33	1
34	0
35	5
36	-20
37	21
38	-8
39	1
40	0
41	5
42	-20
43	21
44	-8
45	1
46	0
47	5
48	-20
49	21
50	-8
51	1
52	0
53	5
54	-18
55	20
56	-8
57	1
58	0
59	5
60	-18
61	20
62	-8
63	1
64	0
65	5
66	-18
67	20
68	-8
69	1
70	0
71	-6
72	35
73	-56
74	36
75	-10
76	1
77	0
78	5
79	-16
80	18
81	-8
82	1
83	0
84	5
85	-18
86	20
87	-8
88	1