A128915 - cp's OEIS frontend

A128915 Triangle read by rows: row n gives coefficients (lowest degree first) of P_n(x), where P_0(x) = P_1(x) = 1; P_n(x) = P_{n-1}(x) + x^n*P_{n-2}(x).

n	a(n)
0	1
1	1
2	1
3	0
4	1
5	1
6	0
7	1
8	1
9	1
10	0
11	1
12	1
13	1
14	0
15	1
16	1
17	0
18	1
19	1
20	1
21	1
22	1
23	1
24	1
25	1
26	0
27	1
28	1
29	1
30	1
31	2
32	1
33	2
34	1
35	1
36	0
37	1
38	1
39	0
40	1
41	1
42	1
43	1
44	2
45	2
46	2
47	2
48	2
49	1
50	2
51	1
52	1
53	1
54	1
55	0
56	1
57	1
58	1
59	1
60	2
61	2
62	3
63	2
64	3
65	2
66	3
67	2
68	3
69	2
70	2
71	1
72	1
73	0
74	1
75	1
76	0
77	1
78	1
79	1
80	1
81	2
82	2
83	3
84	3
85	3
86	3
87	4
88	3
89	4
90	4
91	4
92	3
93	3
94	2
95	2
96	2
97	1
98	1

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

cp's OEIS Frontend

A128915 Triangle read by rows: row n gives coefficients (lowest degree first) of P_n(x), where P_0(x) = P_1(x) = 1; P_n(x) = P_{n-1}(x) + x^n*P_{n-2}(x).

Table of values

List of values

n	a(n)
0	1
1	1
2	1
3	0
4	1
5	1
6	0
7	1
8	1
9	1
10	0
11	1
12	1
13	1
14	0
15	1
16	1
17	0
18	1
19	1
20	1
21	1
22	1
23	1
24	1
25	1
26	0
27	1
28	1
29	1
30	1
31	2
32	1
33	2
34	1
35	1
36	0
37	1
38	1
39	0
40	1
41	1
42	1
43	1
44	2
45	2
46	2
47	2
48	2
49	1
50	2
51	1
52	1
53	1
54	1
55	0
56	1
57	1
58	1
59	1
60	2
61	2
62	3
63	2
64	3
65	2
66	3
67	2
68	3
69	2
70	2
71	1
72	1
73	0
74	1
75	1
76	0
77	1
78	1
79	1
80	1
81	2
82	2
83	3
84	3
85	3
86	3
87	4
88	3
89	4
90	4
91	4
92	3
93	3
94	2
95	2
96	2
97	1
98	1

n	a(n)
0	1
1	1
2	1
3	0
4	1
5	1
6	0
7	1
8	1
9	1
10	0
11	1
12	1
13	1
14	0
15	1
16	1
17	0
18	1
19	1
20	1
21	1
22	1
23	1
24	1
25	1
26	0
27	1
28	1
29	1
30	1
31	2
32	1
33	2
34	1
35	1
36	0
37	1
38	1
39	0
40	1
41	1
42	1
43	1
44	2
45	2
46	2
47	2
48	2
49	1
50	2
51	1
52	1
53	1
54	1
55	0
56	1
57	1
58	1
59	1
60	2
61	2
62	3
63	2
64	3
65	2
66	3
67	2
68	3
69	2
70	2
71	1
72	1
73	0
74	1
75	1
76	0
77	1
78	1
79	1
80	1
81	2
82	2
83	3
84	3
85	3
86	3
87	4
88	3
89	4
90	4
91	4
92	3
93	3
94	2
95	2
96	2
97	1
98	1

n	a(n)
0	1
1	1
2	1
3	0
4	1
5	1
6	0
7	1
8	1
9	1
10	0
11	1
12	1
13	1
14	0
15	1
16	1
17	0
18	1
19	1
20	1
21	1
22	1
23	1
24	1
25	1
26	0
27	1
28	1
29	1
30	1
31	2
32	1
33	2
34	1
35	1
36	0
37	1
38	1
39	0
40	1
41	1
42	1
43	1
44	2
45	2
46	2
47	2
48	2
49	1
50	2
51	1
52	1
53	1
54	1
55	0
56	1
57	1
58	1
59	1
60	2
61	2
62	3
63	2
64	3
65	2
66	3
67	2
68	3
69	2
70	2
71	1
72	1
73	0
74	1
75	1
76	0
77	1
78	1
79	1
80	1
81	2
82	2
83	3
84	3
85	3
86	3
87	4
88	3
89	4
90	4
91	4
92	3
93	3
94	2
95	2
96	2
97	1
98	1