A296339 - cp's OEIS frontend

A296339 On an infinite 60-degree sector of hexagonal graph paper, fill in cells by antidiagonals so that each contains the least nonnegative integer such that no line of edge-adjacent cells contains a repeated term.

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

[0, 1, 2, 2, 0, 1, 3, 1, 2, 4, 4, 5, 0, 3, 6, 5, 3, 4, 6, 7, 8, 6, 4, 5, 0, 3, 9, 7, 7, 8, 3, 1, 2, 4, 5, 9, 8, 6, 7, 2, 0, 1, 9, 4, 3, 9, 7, 8, 5, 1, 2, 6, 10, 11, 12, 10, 11, 6, 9, 4, 0, 8, 7, 5, 13, 14, 11, 9, 10, 12, 5, 3, 13, 6, 8, 7, 15, 16, 12, 10, 11, 7]

cp's OEIS Frontend

A296339 On an infinite 60-degree sector of hexagonal graph paper, fill in cells by antidiagonals so that each contains the least nonnegative integer such that no line of edge-adjacent cells contains a repeated term.

Table of values

List of values

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

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

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