A123230 - cp's OEIS frontend

A123230 Triangle read by rows: T(n,k) is the coefficient of x^k in the polynomial p(n,x) defined by p(0,x)=1, p(1,x)=1+x, p(n,x)=xp(n-1,x)+(-1)^(n+1)p(n-2,x) for n>=2.

n	a(n)
0	1
1	1
2	1
3	-1
4	1
5	1
6	1
7	0
8	1
9	1
10	1
11	0
12	-1
13	1
14	1
15	1
16	1
17	1
18	0
19	1
20	1
21	-1
22	1
23	2
24	0
25	-1
26	1
27	1
28	1
29	0
30	2
31	2
32	1
33	0
34	1
35	1
36	1
37	0
38	-2
39	2
40	3
41	0
42	-1
43	1
44	1
45	1
46	1
47	2
48	0
49	3
50	3
51	1
52	0
53	1
54	1
55	-1
56	1
57	3
58	0
59	-3
60	3
61	4
62	0
63	-1
64	1
65	1

[1, 1, 1, -1, 1, 1, 1, 0, 1, 1, 1, 0, -1, 1, 1, 1, 1, 1, 0, 1, 1, -1, 1, 2, 0, -1, 1, 1, 1, 0, 2, 2, 1, 0, 1, 1, 1, 0, -2, 2, 3, 0, -1, 1, 1, 1, 1, 2, 0, 3, 3, 1, 0, 1, 1, -1, 1, 3, 0, -3, 3, 4, 0, -1, 1, 1]

cp's OEIS Frontend

A123230 Triangle read by rows: T(n,k) is the coefficient of x^k in the polynomial p(n,x) defined by p(0,x)=1, p(1,x)=1+x, p(n,x)=xp(n-1,x)+(-1)^(n+1)p(n-2,x) for n>=2.

Table of values

List of values

n	a(n)
0	1
1	1
2	1
3	-1
4	1
5	1
6	1
7	0
8	1
9	1
10	1
11	0
12	-1
13	1
14	1
15	1
16	1
17	1
18	0
19	1
20	1
21	-1
22	1
23	2
24	0
25	-1
26	1
27	1
28	1
29	0
30	2
31	2
32	1
33	0
34	1
35	1
36	1
37	0
38	-2
39	2
40	3
41	0
42	-1
43	1
44	1
45	1
46	1
47	2
48	0
49	3
50	3
51	1
52	0
53	1
54	1
55	-1
56	1
57	3
58	0
59	-3
60	3
61	4
62	0
63	-1
64	1
65	1

n	a(n)
0	1
1	1
2	1
3	-1
4	1
5	1
6	1
7	0
8	1
9	1
10	1
11	0
12	-1
13	1
14	1
15	1
16	1
17	1
18	0
19	1
20	1
21	-1
22	1
23	2
24	0
25	-1
26	1
27	1
28	1
29	0
30	2
31	2
32	1
33	0
34	1
35	1
36	1
37	0
38	-2
39	2
40	3
41	0
42	-1
43	1
44	1
45	1
46	1
47	2
48	0
49	3
50	3
51	1
52	0
53	1
54	1
55	-1
56	1
57	3
58	0
59	-3
60	3
61	4
62	0
63	-1
64	1
65	1

n	a(n)
0	1
1	1
2	1
3	-1
4	1
5	1
6	1
7	0
8	1
9	1
10	1
11	0
12	-1
13	1
14	1
15	1
16	1
17	1
18	0
19	1
20	1
21	-1
22	1
23	2
24	0
25	-1
26	1
27	1
28	1
29	0
30	2
31	2
32	1
33	0
34	1
35	1
36	1
37	0
38	-2
39	2
40	3
41	0
42	-1
43	1
44	1
45	1
46	1
47	2
48	0
49	3
50	3
51	1
52	0
53	1
54	1
55	-1
56	1
57	3
58	0
59	-3
60	3
61	4
62	0
63	-1
64	1
65	1