A063826 - cp's OEIS frontend

A063826 Let 1, 2, 3, 4 represent moves to the right, down, left and up; this sequence describes the movements in the clockwise square spiral (a.k.a. Ulam Spiral).

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

[1, 2, 3, 3, 4, 4, 1, 1, 1, 2, 2, 2, 3, 3, 3, 3, 4, 4, 4, 4, 1, 1, 1, 1, 1, 2, 2, 2, 2, 2, 3, 3, 3, 3, 3, 3, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 2, 2, 2, 2, 2, 2, 2, 3, 3, 3, 3, 3, 3, 3, 3, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 2, 2, 2, 2, 2, 2, 2, 2, 2, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 4, 4, 4, 4, 4]

cp's OEIS Frontend

A063826 Let 1, 2, 3, 4 represent moves to the right, down, left and up; this sequence describes the movements in the clockwise square spiral (a.k.a. Ulam Spiral).

Table of values

List of values

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

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

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