A136600 - cp's OEIS frontend

A136600 Triangle of coefficients of characteristic polynomials of a special type of Cartan matrix: E_n for E_6,E_7,E_8,E_11 example M(6)/ E_6: {{2, -1, 0, 0, 0, 0}, {-1, 2, -1, 0, 0, 0}, {0, -1, 2, -1, 0, -1}, {0, 0, -1, 2, -1, 0}, {0, 0, 0, -1, 2, 0}, {0, 0, -1, 0, 0, 2}},.

n	a(n)
1	1
2	2
3	-1
4	4
5	-4
6	1
7	6
8	-11
9	6
10	-1
11	5
12	-20
13	21
14	-8
15	1
16	4
17	-34
18	56
19	-36
20	10
21	-1
22	3
23	-52
24	125
25	-120
26	55
27	-12
28	1
29	2
30	-73
31	246
32	-329
33	220
34	-78
35	14
36	-1
37	1
38	-96
39	440
40	-784
41	714
42	-364
43	105
44	-16
45	1
46	0
47	-120
48	730
49	-1679
50	1992
51	-1364
52	560
53	-136
54	18
55	-1
56	-1
57	-144
58	1140
59	-3304
60	4949
61	-4356
62	2379
63	-816
64	171
65	-20
66	1
67	-2
68	-167
69	1694

[1, 2, -1, 4, -4, 1, 6, -11, 6, -1, 5, -20, 21, -8, 1, 4, -34, 56, -36, 10, -1, 3, -52, 125, -120, 55, -12, 1, 2, -73, 246, -329, 220, -78, 14, -1, 1, -96, 440, -784, 714, -364, 105, -16, 1, 0, -120, 730, -1679, 1992, -1364, 560, -136, 18, -1, -1, -144, 1140, -3304, 4949, -4356, 2379, -816, 171, -20, 1, -2, -167, 1694]

cp's OEIS Frontend

A136600 Triangle of coefficients of characteristic polynomials of a special type of Cartan matrix: E_n for E_6,E_7,E_8,E_11 example M(6)/ E_6: {{2, -1, 0, 0, 0, 0}, {-1, 2, -1, 0, 0, 0}, {0, -1, 2, -1, 0, -1}, {0, 0, -1, 2, -1, 0}, {0, 0, 0, -1, 2, 0}, {0, 0, -1, 0, 0, 2}},.

Table of values

List of values