A090929 - cp's OEIS frontend

A090929 Permutation of natural numbers arising from a square spiral.

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

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

cp's OEIS Frontend

A090929 Permutation of natural numbers arising from a square spiral.

Table of values

List of values

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

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

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