A033988 - cp's OEIS frontend

A033988 Write 0,1,2,... in a clockwise spiral on a square lattice, writing each digit at a separate lattice point, starting with 0 at the origin and 1 at x=0, y=-1; sequence gives the numbers on the positive y-axis.

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

[0, 5, 1, 4, 3, 7, 8, 0, 4, 7, 7, 1, 2, 6, 2, 1, 8, 7, 4, 2, 6, 1, 8, 9, 2, 7, 6, 0, 6, 5, 1, 2, 0, 4, 1, 5, 8, 5, 1, 8, 8, 8, 2, 1, 2, 3, 2, 4, 9, 0, 2, 8, 9, 9, 3, 3, 2, 0, 3, 7, 9, 3, 4, 2, 8, 8, 4, 7, 1, 5, 5, 3, 7, 4, 5, 9, 7, 5, 6, 5, 9, 8, 7, 1, 5, 3, 7, 8, 4, 0, 8, 5, 6, 9, 9, 3, 1, 0, 9, 8, 1, 1, 6, 9, 9]

cp's OEIS Frontend

A033988 Write 0,1,2,... in a clockwise spiral on a square lattice, writing each digit at a separate lattice point, starting with 0 at the origin and 1 at x=0, y=-1; sequence gives the numbers on the positive y-axis.

Table of values

List of values

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

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

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