A258059 - cp's OEIS frontend

A258059 Let n = Sum_{i=0..k} d_i*4^i be the base-4 expansion of n, with 0 <= d_i < 4. Then a(n) = minimal i such that d_i is not 1, or k+1 if there is no such i.

n	a(n)
1	1
2	0
3	0
4	0
5	2
6	0
7	0
8	0
9	1
10	0
11	0
12	0
13	1
14	0
15	0
16	0
17	1
18	0
19	0
20	0
21	3
22	0
23	0
24	0
25	1
26	0
27	0
28	0
29	1
30	0
31	0
32	0
33	1
34	0
35	0
36	0
37	2
38	0
39	0
40	0
41	1
42	0
43	0
44	0
45	1
46	0
47	0
48	0
49	1
50	0
51	0
52	0
53	2
54	0
55	0
56	0
57	1
58	0
59	0
60	0
61	1
62	0
63	0
64	0
65	1
66	0
67	0
68	0
69	2
70	0
71	0
72	0
73	1
74	0
75	0
76	0
77	1
78	0
79	0
80	0
81	1
82	0
83	0
84	0
85	4
86	0
87	0
88	0
89	1
90	0
91	0
92	0
93	1
94	0
95	0
96	0
97	1
98	0
99	0
100	0
101	2
102	0
103	0
104	0
105	1

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

cp's OEIS Frontend

A258059 Let n = Sum_{i=0..k} d_i*4^i be the base-4 expansion of n, with 0 <= d_i < 4. Then a(n) = minimal i such that d_i is not 1, or k+1 if there is no such i.

Table of values

List of values

n	a(n)
1	1
2	0
3	0
4	0
5	2
6	0
7	0
8	0
9	1
10	0
11	0
12	0
13	1
14	0
15	0
16	0
17	1
18	0
19	0
20	0
21	3
22	0
23	0
24	0
25	1
26	0
27	0
28	0
29	1
30	0
31	0
32	0
33	1
34	0
35	0
36	0
37	2
38	0
39	0
40	0
41	1
42	0
43	0
44	0
45	1
46	0
47	0
48	0
49	1
50	0
51	0
52	0
53	2
54	0
55	0
56	0
57	1
58	0
59	0
60	0
61	1
62	0
63	0
64	0
65	1
66	0
67	0
68	0
69	2
70	0
71	0
72	0
73	1
74	0
75	0
76	0
77	1
78	0
79	0
80	0
81	1
82	0
83	0
84	0
85	4
86	0
87	0
88	0
89	1
90	0
91	0
92	0
93	1
94	0
95	0
96	0
97	1
98	0
99	0
100	0
101	2
102	0
103	0
104	0
105	1

n	a(n)
1	1
2	0
3	0
4	0
5	2
6	0
7	0
8	0
9	1
10	0
11	0
12	0
13	1
14	0
15	0
16	0
17	1
18	0
19	0
20	0
21	3
22	0
23	0
24	0
25	1
26	0
27	0
28	0
29	1
30	0
31	0
32	0
33	1
34	0
35	0
36	0
37	2
38	0
39	0
40	0
41	1
42	0
43	0
44	0
45	1
46	0
47	0
48	0
49	1
50	0
51	0
52	0
53	2
54	0
55	0
56	0
57	1
58	0
59	0
60	0
61	1
62	0
63	0
64	0
65	1
66	0
67	0
68	0
69	2
70	0
71	0
72	0
73	1
74	0
75	0
76	0
77	1
78	0
79	0
80	0
81	1
82	0
83	0
84	0
85	4
86	0
87	0
88	0
89	1
90	0
91	0
92	0
93	1
94	0
95	0
96	0
97	1
98	0
99	0
100	0
101	2
102	0
103	0
104	0
105	1

n	a(n)
1	1
2	0
3	0
4	0
5	2
6	0
7	0
8	0
9	1
10	0
11	0
12	0
13	1
14	0
15	0
16	0
17	1
18	0
19	0
20	0
21	3
22	0
23	0
24	0
25	1
26	0
27	0
28	0
29	1
30	0
31	0
32	0
33	1
34	0
35	0
36	0
37	2
38	0
39	0
40	0
41	1
42	0
43	0
44	0
45	1
46	0
47	0
48	0
49	1
50	0
51	0
52	0
53	2
54	0
55	0
56	0
57	1
58	0
59	0
60	0
61	1
62	0
63	0
64	0
65	1
66	0
67	0
68	0
69	2
70	0
71	0
72	0
73	1
74	0
75	0
76	0
77	1
78	0
79	0
80	0
81	1
82	0
83	0
84	0
85	4
86	0
87	0
88	0
89	1
90	0
91	0
92	0
93	1
94	0
95	0
96	0
97	1
98	0
99	0
100	0
101	2
102	0
103	0
104	0
105	1