A230295 - cp's OEIS frontend

A230295 a(n) = Sum_{i=1..n} d(8i+5) - Sum_{i=1..n} d(4i+3), where d(n) = A000005(n).

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

[0, 2, 0, 0, 4, 2, 2, 2, 2, 4, 6, 4, 2, 6, 4, 6, 8, 4, 4, 10, 8, 6, 10, 6, 8, 10, 10, 8, 8, 10, 12, 16, 10, 10, 14, 10, 12, 12, 10, 14, 18, 16, 12, 18, 18, 16, 18, 12, 12, 18, 16, 16, 20, 20, 22, 24, 18, 18, 22, 20, 20, 22, 16, 16, 26, 26, 26, 26, 22, 24, 24, 24, 24, 24, 26, 26, 32, 24, 26, 30, 28, 28, 28, 26, 26, 36]

cp's OEIS Frontend

A230295 a(n) = Sum_{i=1..n} d(8i+5) - Sum_{i=1..n} d(4i+3), where d(n) = A000005(n).

Table of values

List of values

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

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

cp's OEIS Frontend

A230295 a(n) = Sum_{i=1..n} d(8*i+5) - Sum_{i=1..n} d(4*i+3), where d(n) = A000005(n).

Table of values

List of values

A230295 a(n) = Sum_{i=1..n} d(8i+5) - Sum_{i=1..n} d(4i+3), where d(n) = A000005(n).

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