A334073 - cp's OEIS frontend

A334073 Decimal expansion of Sum_{k >= 1} e(k)/2^k, where e(k) = 1 if gpf(k+1) > gpf(k) and 0 otherwise, and gpf(k) is the greatest prime dividing k (A006530).

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

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

cp's OEIS Frontend

A334073 Decimal expansion of Sum_{k >= 1} e(k)/2^k, where e(k) = 1 if gpf(k+1) > gpf(k) and 0 otherwise, and gpf(k) is the greatest prime dividing k (A006530).

Table of values

List of values

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

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

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