A274912 - cp's OEIS frontend

A274912 Square array read by antidiagonals upwards in which each new term is the least nonnegative integer distinct from its neighbors.

n	a(n)
0	0
1	1
2	2
3	0
4	3
5	0
6	1
7	2
8	1
9	2
10	0
11	3
12	0
13	3
14	0
15	1
16	2
17	1
18	2
19	1
20	2
21	0
22	3
23	0
24	3
25	0
26	3
27	0
28	1
29	2
30	1
31	2
32	1
33	2
34	1
35	2
36	0
37	3
38	0
39	3
40	0
41	3
42	0
43	3
44	0
45	1
46	2
47	1
48	2
49	1
50	2
51	1
52	2
53	1
54	2
55	0
56	3
57	0
58	3
59	0
60	3
61	0
62	3
63	0
64	3
65	0
66	1
67	2
68	1
69	2
70	1
71	2
72	1
73	2
74	1
75	2
76	1
77	2
78	0
79	3
80	0
81	3
82	0
83	3
84	0
85	3
86	0
87	3
88	0
89	3
90	0
91	1
92	2
93	1
94	2
95	1
96	2
97	1
98	2
99	1
100	2
101	1
102	2
103	1
104	2

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

cp's OEIS Frontend

A274912 Square array read by antidiagonals upwards in which each new term is the least nonnegative integer distinct from its neighbors.

Table of values

List of values

n	a(n)
0	0
1	1
2	2
3	0
4	3
5	0
6	1
7	2
8	1
9	2
10	0
11	3
12	0
13	3
14	0
15	1
16	2
17	1
18	2
19	1
20	2
21	0
22	3
23	0
24	3
25	0
26	3
27	0
28	1
29	2
30	1
31	2
32	1
33	2
34	1
35	2
36	0
37	3
38	0
39	3
40	0
41	3
42	0
43	3
44	0
45	1
46	2
47	1
48	2
49	1
50	2
51	1
52	2
53	1
54	2
55	0
56	3
57	0
58	3
59	0
60	3
61	0
62	3
63	0
64	3
65	0
66	1
67	2
68	1
69	2
70	1
71	2
72	1
73	2
74	1
75	2
76	1
77	2
78	0
79	3
80	0
81	3
82	0
83	3
84	0
85	3
86	0
87	3
88	0
89	3
90	0
91	1
92	2
93	1
94	2
95	1
96	2
97	1
98	2
99	1
100	2
101	1
102	2
103	1
104	2

n	a(n)
0	0
1	1
2	2
3	0
4	3
5	0
6	1
7	2
8	1
9	2
10	0
11	3
12	0
13	3
14	0
15	1
16	2
17	1
18	2
19	1
20	2
21	0
22	3
23	0
24	3
25	0
26	3
27	0
28	1
29	2
30	1
31	2
32	1
33	2
34	1
35	2
36	0
37	3
38	0
39	3
40	0
41	3
42	0
43	3
44	0
45	1
46	2
47	1
48	2
49	1
50	2
51	1
52	2
53	1
54	2
55	0
56	3
57	0
58	3
59	0
60	3
61	0
62	3
63	0
64	3
65	0
66	1
67	2
68	1
69	2
70	1
71	2
72	1
73	2
74	1
75	2
76	1
77	2
78	0
79	3
80	0
81	3
82	0
83	3
84	0
85	3
86	0
87	3
88	0
89	3
90	0
91	1
92	2
93	1
94	2
95	1
96	2
97	1
98	2
99	1
100	2
101	1
102	2
103	1
104	2

n	a(n)
0	0
1	1
2	2
3	0
4	3
5	0
6	1
7	2
8	1
9	2
10	0
11	3
12	0
13	3
14	0
15	1
16	2
17	1
18	2
19	1
20	2
21	0
22	3
23	0
24	3
25	0
26	3
27	0
28	1
29	2
30	1
31	2
32	1
33	2
34	1
35	2
36	0
37	3
38	0
39	3
40	0
41	3
42	0
43	3
44	0
45	1
46	2
47	1
48	2
49	1
50	2
51	1
52	2
53	1
54	2
55	0
56	3
57	0
58	3
59	0
60	3
61	0
62	3
63	0
64	3
65	0
66	1
67	2
68	1
69	2
70	1
71	2
72	1
73	2
74	1
75	2
76	1
77	2
78	0
79	3
80	0
81	3
82	0
83	3
84	0
85	3
86	0
87	3
88	0
89	3
90	0
91	1
92	2
93	1
94	2
95	1
96	2
97	1
98	2
99	1
100	2
101	1
102	2
103	1
104	2