A022827 - cp's OEIS frontend

A022827 a(n) = absolute value of ( a([ n/2 ]) - a([ n/3 ]) + ... + ((-1)^n)a([ n/n ]) ).

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

[1, 1, 0, 1, 0, 0, 1, 1, 1, 1, 0, 1, 2, 0, 1, 3, 2, 2, 1, 0, 1, 1, 2, 0, 0, 2, 2, 1, 0, 0, 1, 3, 4, 4, 3, 1, 0, 0, 1, 1, 2, 2, 1, 0, 0, 2, 1, 1, 3, 3, 2, 1, 0, 0, 1, 1, 2, 2, 1, 0, 1, 1, 1, 5, 4, 4, 3, 2, 1, 3, 2, 4, 3, 3, 3, 2, 1, 1, 0, 2, 2, 0, 1, 2, 1, 1, 0, 0, 1, 1, 4, 1, 2, 2, 1, 1, 2, 4, 4]

cp's OEIS Frontend

A022827 a(n) = absolute value of ( a([ n/2 ]) - a([ n/3 ]) + ... + ((-1)^n)a([ n/n ]) ).

Table of values

List of values

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

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

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