A155912 - cp's OEIS frontend

A155912 Let d(i) be the i-th digit of the decimal expansion of Pi = 3.1415926535897932384626433832795..., so that d(0) = 3, d(1) = 1, d(2) = 4, etc. Then a(0) = 3, a(n) = d(d(n)) for n>0.

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

[3, 1, 5, 1, 9, 3, 4, 2, 9, 1, 9, 5, 3, 6, 3, 1, 4, 1, 5, 5, 2, 4, 2, 5, 1, 1, 5, 1, 4, 6, 3, 9, 3, 4, 5, 5, 5, 1, 3, 6, 1, 2, 3, 1, 3, 3, 1, 6, 9, 1, 3, 9, 5, 4, 3, 3, 6, 5, 3, 5, 5, 9, 3, 4, 1, 3, 6, 5, 1, 2, 5, 3, 2, 4, 5, 2, 4, 3, 5, 3, 3, 5, 2, 4, 5, 3, 1, 5, 5, 4, 9, 1, 5, 4, 1, 1, 6, 3, 2, 6, 3, 5, 4, 1, 5]

cp's OEIS Frontend

A155912 Let d(i) be the i-th digit of the decimal expansion of Pi = 3.1415926535897932384626433832795..., so that d(0) = 3, d(1) = 1, d(2) = 4, etc. Then a(0) = 3, a(n) = d(d(n)) for n>0.

Table of values

List of values

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

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

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