A203905 - cp's OEIS frontend

A203905 Symmetric matrix based on (1,0,1,0,1,0,1,0,...), by antidiagonals.

n	a(n)
1	1
2	0
3	0
4	1
5	1
6	1
7	0
8	0
9	0
10	0
11	1
12	1
13	2
14	1
15	1
16	0
17	0
18	0
19	0
20	0
21	0
22	1
23	1
24	2
25	2
26	2
27	1
28	1
29	0
30	0
31	0
32	0
33	0
34	0
35	0
36	0
37	1
38	1
39	2
40	2
41	3
42	2
43	2
44	1
45	1
46	0
47	0
48	0
49	0
50	0
51	0
52	0
53	0
54	0
55	0
56	1
57	1
58	2
59	2
60	3
61	3
62	3
63	2
64	2
65	1
66	1
67	0
68	0
69	0
70	0
71	0
72	0
73	0
74	0
75	0
76	0
77	0
78	0
79	1
80	1
81	2
82	2
83	3
84	3
85	4
86	3
87	3
88	2
89	2
90	1
91	1
92	0
93	0
94	0
95	0
96	0
97	0
98	0
99	0

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

cp's OEIS Frontend

A203905 Symmetric matrix based on (1,0,1,0,1,0,1,0,...), by antidiagonals.

Table of values

List of values

n	a(n)
1	1
2	0
3	0
4	1
5	1
6	1
7	0
8	0
9	0
10	0
11	1
12	1
13	2
14	1
15	1
16	0
17	0
18	0
19	0
20	0
21	0
22	1
23	1
24	2
25	2
26	2
27	1
28	1
29	0
30	0
31	0
32	0
33	0
34	0
35	0
36	0
37	1
38	1
39	2
40	2
41	3
42	2
43	2
44	1
45	1
46	0
47	0
48	0
49	0
50	0
51	0
52	0
53	0
54	0
55	0
56	1
57	1
58	2
59	2
60	3
61	3
62	3
63	2
64	2
65	1
66	1
67	0
68	0
69	0
70	0
71	0
72	0
73	0
74	0
75	0
76	0
77	0
78	0
79	1
80	1
81	2
82	2
83	3
84	3
85	4
86	3
87	3
88	2
89	2
90	1
91	1
92	0
93	0
94	0
95	0
96	0
97	0
98	0
99	0

n	a(n)
1	1
2	0
3	0
4	1
5	1
6	1
7	0
8	0
9	0
10	0
11	1
12	1
13	2
14	1
15	1
16	0
17	0
18	0
19	0
20	0
21	0
22	1
23	1
24	2
25	2
26	2
27	1
28	1
29	0
30	0
31	0
32	0
33	0
34	0
35	0
36	0
37	1
38	1
39	2
40	2
41	3
42	2
43	2
44	1
45	1
46	0
47	0
48	0
49	0
50	0
51	0
52	0
53	0
54	0
55	0
56	1
57	1
58	2
59	2
60	3
61	3
62	3
63	2
64	2
65	1
66	1
67	0
68	0
69	0
70	0
71	0
72	0
73	0
74	0
75	0
76	0
77	0
78	0
79	1
80	1
81	2
82	2
83	3
84	3
85	4
86	3
87	3
88	2
89	2
90	1
91	1
92	0
93	0
94	0
95	0
96	0
97	0
98	0
99	0

n	a(n)
1	1
2	0
3	0
4	1
5	1
6	1
7	0
8	0
9	0
10	0
11	1
12	1
13	2
14	1
15	1
16	0
17	0
18	0
19	0
20	0
21	0
22	1
23	1
24	2
25	2
26	2
27	1
28	1
29	0
30	0
31	0
32	0
33	0
34	0
35	0
36	0
37	1
38	1
39	2
40	2
41	3
42	2
43	2
44	1
45	1
46	0
47	0
48	0
49	0
50	0
51	0
52	0
53	0
54	0
55	0
56	1
57	1
58	2
59	2
60	3
61	3
62	3
63	2
64	2
65	1
66	1
67	0
68	0
69	0
70	0
71	0
72	0
73	0
74	0
75	0
76	0
77	0
78	0
79	1
80	1
81	2
82	2
83	3
84	3
85	4
86	3
87	3
88	2
89	2
90	1
91	1
92	0
93	0
94	0
95	0
96	0
97	0
98	0
99	0