A132139 - cp's OEIS frontend

A132139 a(n) = f(n,1) with f(m,x) = if m<3 then (if m=1 then x else 0) else (if m mod 3 = 0 then 0 else f([m/3], x*(1 + m mod 3) + 1)).

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

[1, 0, 0, 3, 4, 0, 0, 0, 0, 0, 0, 0, 7, 9, 0, 10, 13, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 15, 19, 0, 21, 27, 0, 0, 0, 0, 22, 28, 0, 31, 40, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0]

cp's OEIS Frontend

A132139 a(n) = f(n,1) with f(m,x) = if m<3 then (if m=1 then x else 0) else (if m mod 3 = 0 then 0 else f([m/3], x*(1 + m mod 3) + 1)).

Table of values

List of values

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

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

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