A344548 - cp's OEIS frontend

A344548 Lexicographically earliest sequence of nonnegative terms forming a clockwise square spiral when nothing else is read except the parity of the digits (see the Comments section).

n	a(n)
1	0
2	1
3	3
4	2
5	5
6	4
7	7
8	6
9	8
10	9
11	20
12	10
13	22
14	12
15	24
16	14
17	26
18	21
19	28
20	40
21	16
22	42
23	44
24	18
25	46
26	48
27	30
28	60
29	62
30	23
31	64
32	66
33	68
34	32
35	80
36	82
37	84
38	34
39	86
40	88
41	201
42	200
43	202
44	203
45	204
46	206
47	205
48	208
49	220
50	222
51	36
52	224
53	226
54	207
55	228
56	240
57	242
58	25
59	244
60	246
61	248
62	27
63	260
64	262
65	264
66	209
67	266
68	268
69	280
70	221
71	282
72	284

[0, 1, 3, 2, 5, 4, 7, 6, 8, 9, 20, 10, 22, 12, 24, 14, 26, 21, 28, 40, 16, 42, 44, 18, 46, 48, 30, 60, 62, 23, 64, 66, 68, 32, 80, 82, 84, 34, 86, 88, 201, 200, 202, 203, 204, 206, 205, 208, 220, 222, 36, 224, 226, 207, 228, 240, 242, 25, 244, 246, 248, 27, 260, 262, 264, 209, 266, 268, 280, 221, 282, 284]

cp's OEIS Frontend

A344548 Lexicographically earliest sequence of nonnegative terms forming a clockwise square spiral when nothing else is read except the parity of the digits (see the Comments section).

Table of values

List of values

n	a(n)
1	0
2	1
3	3
4	2
5	5
6	4
7	7
8	6
9	8
10	9
11	20
12	10
13	22
14	12
15	24
16	14
17	26
18	21
19	28
20	40
21	16
22	42
23	44
24	18
25	46
26	48
27	30
28	60
29	62
30	23
31	64
32	66
33	68
34	32
35	80
36	82
37	84
38	34
39	86
40	88
41	201
42	200
43	202
44	203
45	204
46	206
47	205
48	208
49	220
50	222
51	36
52	224
53	226
54	207
55	228
56	240
57	242
58	25
59	244
60	246
61	248
62	27
63	260
64	262
65	264
66	209
67	266
68	268
69	280
70	221
71	282
72	284

n	a(n)
1	0
2	1
3	3
4	2
5	5
6	4
7	7
8	6
9	8
10	9
11	20
12	10
13	22
14	12
15	24
16	14
17	26
18	21
19	28
20	40
21	16
22	42
23	44
24	18
25	46
26	48
27	30
28	60
29	62
30	23
31	64
32	66
33	68
34	32
35	80
36	82
37	84
38	34
39	86
40	88
41	201
42	200
43	202
44	203
45	204
46	206
47	205
48	208
49	220
50	222
51	36
52	224
53	226
54	207
55	228
56	240
57	242
58	25
59	244
60	246
61	248
62	27
63	260
64	262
65	264
66	209
67	266
68	268
69	280
70	221
71	282
72	284

n	a(n)
1	0
2	1
3	3
4	2
5	5
6	4
7	7
8	6
9	8
10	9
11	20
12	10
13	22
14	12
15	24
16	14
17	26
18	21
19	28
20	40
21	16
22	42
23	44
24	18
25	46
26	48
27	30
28	60
29	62
30	23
31	64
32	66
33	68
34	32
35	80
36	82
37	84
38	34
39	86
40	88
41	201
42	200
43	202
44	203
45	204
46	206
47	205
48	208
49	220
50	222
51	36
52	224
53	226
54	207
55	228
56	240
57	242
58	25
59	244
60	246
61	248
62	27
63	260
64	262
65	264
66	209
67	266
68	268
69	280
70	221
71	282
72	284