A358129 - cp's OEIS frontend

A358129 Lexicographically earliest sequence of distinct nonnegative integers on a square spiral such that no number shares a digit with any of its four orthogonally adjacent neighbors.

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

[0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 20, 11, 22, 10, 24, 13, 25, 16, 23, 14, 26, 15, 28, 17, 30, 12, 33, 18, 27, 19, 32, 40, 29, 31, 42, 36, 21, 34, 50, 41, 35, 44, 37, 45, 38, 46, 39, 47, 53, 48, 55, 49, 52, 43, 56, 70, 51, 60, 57, 61, 54, 63, 58, 64, 59, 66, 71, 62, 73, 68, 72, 65, 74, 69, 77, 90, 75]

cp's OEIS Frontend

A358129 Lexicographically earliest sequence of distinct nonnegative integers on a square spiral such that no number shares a digit with any of its four orthogonally adjacent neighbors.

Table of values

List of values

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

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

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