A091828 - cp's OEIS frontend

A091828 a(n)=n-2*valuation(A000254(n),3).

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

[1, 0, 3, 4, 5, 2, 1, 4, 5, 6, 7, 6, 7, 8, 7, 8, 9, 4, 5, 6, 3, 2, 5, 6, 7, 8, 7, 8, 9, 8, 9, 10, 9, 10, 11, 8, 9, 10, 9, 10, 11, 10, 11, 12, 9, 10, 11, 10, 11, 12, 11, 12, 13, 6, 7, 8, 7, 8, 9, 8, 9, 10, 5, 6, 7, 4, 5, 6, 7, 8, 9, 8, 9, 10, 9, 10, 11, 10, 11, 12, 9, 10, 11, 10, 11, 12, 11, 12, 13]

cp's OEIS Frontend

A091828 a(n)=n-2*valuation(A000254(n),3).

Table of values

List of values

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

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

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