A339799 - cp's OEIS frontend

A339799 Decimal expansion of Sum_{m>=1} (-1)^floor(sqrt(m)) / m.

n	a(n)
1	1
2	2
3	9
4	4
5	0
6	8
7	1
8	2
9	2
10	1
11	8
12	8
13	3
14	0
15	9
16	1
17	0
18	7
19	6
20	3
21	0
22	3
23	8
24	2
25	1
26	7
27	1
28	8
29	3
30	5
31	6
32	7
33	3
34	1
35	2
36	5
37	0
38	5
39	0
40	1
41	1
42	2
43	2
44	5
45	9
46	5
47	3
48	9
49	9
50	2
51	0
52	4
53	3
54	0
55	2
56	2
57	7
58	6
59	5
60	9
61	2
62	3
63	3
64	9
65	5
66	2
67	7
68	5
69	5
70	1
71	7
72	1
73	2
74	7
75	9
76	3
77	8
78	5
79	1
80	5
81	7
82	1
83	2
84	0
85	9
86	0
87	3
88	6
89	2
90	6
91	1
92	8
93	4
94	8
95	6
96	1
97	4
98	2
99	7
100	8
101	9
102	6
103	0
104	8
105	2

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

cp's OEIS Frontend

A339799 Decimal expansion of Sum_{m>=1} (-1)^floor(sqrt(m)) / m.

Table of values

List of values

n	a(n)
1	1
2	2
3	9
4	4
5	0
6	8
7	1
8	2
9	2
10	1
11	8
12	8
13	3
14	0
15	9
16	1
17	0
18	7
19	6
20	3
21	0
22	3
23	8
24	2
25	1
26	7
27	1
28	8
29	3
30	5
31	6
32	7
33	3
34	1
35	2
36	5
37	0
38	5
39	0
40	1
41	1
42	2
43	2
44	5
45	9
46	5
47	3
48	9
49	9
50	2
51	0
52	4
53	3
54	0
55	2
56	2
57	7
58	6
59	5
60	9
61	2
62	3
63	3
64	9
65	5
66	2
67	7
68	5
69	5
70	1
71	7
72	1
73	2
74	7
75	9
76	3
77	8
78	5
79	1
80	5
81	7
82	1
83	2
84	0
85	9
86	0
87	3
88	6
89	2
90	6
91	1
92	8
93	4
94	8
95	6
96	1
97	4
98	2
99	7
100	8
101	9
102	6
103	0
104	8
105	2

n	a(n)
1	1
2	2
3	9
4	4
5	0
6	8
7	1
8	2
9	2
10	1
11	8
12	8
13	3
14	0
15	9
16	1
17	0
18	7
19	6
20	3
21	0
22	3
23	8
24	2
25	1
26	7
27	1
28	8
29	3
30	5
31	6
32	7
33	3
34	1
35	2
36	5
37	0
38	5
39	0
40	1
41	1
42	2
43	2
44	5
45	9
46	5
47	3
48	9
49	9
50	2
51	0
52	4
53	3
54	0
55	2
56	2
57	7
58	6
59	5
60	9
61	2
62	3
63	3
64	9
65	5
66	2
67	7
68	5
69	5
70	1
71	7
72	1
73	2
74	7
75	9
76	3
77	8
78	5
79	1
80	5
81	7
82	1
83	2
84	0
85	9
86	0
87	3
88	6
89	2
90	6
91	1
92	8
93	4
94	8
95	6
96	1
97	4
98	2
99	7
100	8
101	9
102	6
103	0
104	8
105	2

n	a(n)
1	1
2	2
3	9
4	4
5	0
6	8
7	1
8	2
9	2
10	1
11	8
12	8
13	3
14	0
15	9
16	1
17	0
18	7
19	6
20	3
21	0
22	3
23	8
24	2
25	1
26	7
27	1
28	8
29	3
30	5
31	6
32	7
33	3
34	1
35	2
36	5
37	0
38	5
39	0
40	1
41	1
42	2
43	2
44	5
45	9
46	5
47	3
48	9
49	9
50	2
51	0
52	4
53	3
54	0
55	2
56	2
57	7
58	6
59	5
60	9
61	2
62	3
63	3
64	9
65	5
66	2
67	7
68	5
69	5
70	1
71	7
72	1
73	2
74	7
75	9
76	3
77	8
78	5
79	1
80	5
81	7
82	1
83	2
84	0
85	9
86	0
87	3
88	6
89	2
90	6
91	1
92	8
93	4
94	8
95	6
96	1
97	4
98	2
99	7
100	8
101	9
102	6
103	0
104	8
105	2