A135725 - cp's OEIS frontend

A135725 Let d(i) be the i-th digit of the decimal expansion of e = 2.718281828459045235360287471352662..., so that d(0) = 2, d(1) = 7, d(2) = 1, etc. Then a(0) = 2, a(n) = d(d(n)) for n>0.

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

[2, 8, 7, 2, 1, 2, 7, 2, 1, 2, 2, 8, 8, 2, 2, 8, 1, 8, 8, 8, 1, 2, 1, 2, 8, 2, 8, 7, 8, 8, 1, 1, 1, 1, 2, 8, 8, 8, 8, 8, 1, 2, 8, 2, 8, 8, 1, 8, 8, 8, 8, 8, 8, 8, 2, 8, 1, 1, 8, 1, 8, 1, 1, 8, 8, 1, 2, 2, 8, 1, 1, 8, 2, 8, 8, 8, 8, 2, 8, 8, 8, 2, 8, 8, 7, 8, 2, 1, 7, 8, 2, 8, 1, 8, 7, 1, 1, 2, 1]

cp's OEIS Frontend

A135725 Let d(i) be the i-th digit of the decimal expansion of e = 2.718281828459045235360287471352662..., so that d(0) = 2, d(1) = 7, d(2) = 1, etc. Then a(0) = 2, a(n) = d(d(n)) for n>0.

Table of values

List of values

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

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

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