A204267 - cp's OEIS frontend

A204267 Symmetric matrix: f(i,j)=(i+j+1 mod 3), by antidiagonals.

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

[0, 1, 1, 2, 2, 2, 0, 0, 0, 0, 1, 1, 1, 1, 1, 2, 2, 2, 2, 2, 2, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 1, 1, 1, 2, 2, 2, 2, 2, 2, 2, 2, 2, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 1, 1, 1]

cp's OEIS Frontend

A204267 Symmetric matrix: f(i,j)=(i+j+1 mod 3), by antidiagonals.

Table of values

List of values

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

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

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