A072681 - cp's OEIS frontend

A072681 a(n) = (n - A007917(n)) * (A007918(n) - n).

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

[0, 0, 1, 0, 1, 0, 3, 4, 3, 0, 1, 0, 3, 4, 3, 0, 1, 0, 3, 4, 3, 0, 5, 8, 9, 8, 5, 0, 1, 0, 5, 8, 9, 8, 5, 0, 3, 4, 3, 0, 1, 0, 3, 4, 3, 0, 5, 8, 9, 8, 5, 0, 5, 8, 9, 8, 5, 0, 1, 0, 5, 8, 9, 8, 5, 0, 3, 4, 3, 0, 1, 0, 5, 8, 9, 8, 5, 0, 3, 4, 3, 0, 5, 8, 9, 8, 5, 0, 7, 12, 15, 16, 15, 12, 7, 0, 3, 4, 3, 0, 1, 0]

cp's OEIS Frontend

A072681 a(n) = (n - A007917(n)) * (A007918(n) - n).

Table of values

List of values

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

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

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