A123588 - cp's OEIS frontend

A123588 Triangle read by rows: T(n, k) is the coefficient of x^k in the polynomial 1 - ChT(n, x^(1/2))^2, where ChT(n, x) is the n-th Chebyshev polynomial of the first kind, evaluated at x (0 <= k <= n).

n	a(n)
0	0
1	1
2	-1
3	0
4	4
5	-4
6	1
7	-9
8	24
9	-16
10	0
11	16
12	-80
13	128
14	-64
15	1
16	-25
17	200
18	-560
19	640
20	-256
21	0
22	36
23	-420
24	1792
25	-3456
26	3072
27	-1024
28	1
29	-49
30	784
31	-4704
32	13440
33	-19712
34	14336
35	-4096
36	0
37	64
38	-1344
39	10752
40	-42240
41	90112
42	-106496
43	65536
44	-16384
45	1
46	-81
47	2160
48	-22176
49	114048
50	-329472
51	559104
52	-552960
53	294912

[0, 1, -1, 0, 4, -4, 1, -9, 24, -16, 0, 16, -80, 128, -64, 1, -25, 200, -560, 640, -256, 0, 36, -420, 1792, -3456, 3072, -1024, 1, -49, 784, -4704, 13440, -19712, 14336, -4096, 0, 64, -1344, 10752, -42240, 90112, -106496, 65536, -16384, 1, -81, 2160, -22176, 114048, -329472, 559104, -552960, 294912]

cp's OEIS Frontend

A123588 Triangle read by rows: T(n, k) is the coefficient of x^k in the polynomial 1 - ChT(n, x^(1/2))^2, where ChT(n, x) is the n-th Chebyshev polynomial of the first kind, evaluated at x (0 <= k <= n).

Table of values

List of values