A031006 - cp's OEIS frontend

A031006 a(n)=least k such that base 7 representation of n begins at s(k), where s=A030998.

n	a(n)
1	1
2	2
3	3
4	4
5	5
6	6
7	7
8	9
9	1
10	13
11	15
12	17
13	19
14	21
15	12
16	25
17	2
18	29
19	31
20	33
21	35
22	14
23	28
24	41
25	3
26	45
27	47
28	49
29	16
30	30
31	44
32	57
33	4
34	61
35	63
36	18
37	32
38	46
39	60
40	73
41	5
42	77
43	6
44	20
45	34
46	48
47	62
48	76
49	91
50	7
51	97
52	100
53	103
54	106
55	109
56	96
57	9
58	10
59	121
60	124
61	127
62	130
63	133
64	11

[1, 2, 3, 4, 5, 6, 7, 9, 1, 13, 15, 17, 19, 21, 12, 25, 2, 29, 31, 33, 35, 14, 28, 41, 3, 45, 47, 49, 16, 30, 44, 57, 4, 61, 63, 18, 32, 46, 60, 73, 5, 77, 6, 20, 34, 48, 62, 76, 91, 7, 97, 100, 103, 106, 109, 96, 9, 10, 121, 124, 127, 130, 133, 11]

cp's OEIS Frontend

A031006 a(n)=least k such that base 7 representation of n begins at s(k), where s=A030998.

Table of values

List of values

n	a(n)
1	1
2	2
3	3
4	4
5	5
6	6
7	7
8	9
9	1
10	13
11	15
12	17
13	19
14	21
15	12
16	25
17	2
18	29
19	31
20	33
21	35
22	14
23	28
24	41
25	3
26	45
27	47
28	49
29	16
30	30
31	44
32	57
33	4
34	61
35	63
36	18
37	32
38	46
39	60
40	73
41	5
42	77
43	6
44	20
45	34
46	48
47	62
48	76
49	91
50	7
51	97
52	100
53	103
54	106
55	109
56	96
57	9
58	10
59	121
60	124
61	127
62	130
63	133
64	11

n	a(n)
1	1
2	2
3	3
4	4
5	5
6	6
7	7
8	9
9	1
10	13
11	15
12	17
13	19
14	21
15	12
16	25
17	2
18	29
19	31
20	33
21	35
22	14
23	28
24	41
25	3
26	45
27	47
28	49
29	16
30	30
31	44
32	57
33	4
34	61
35	63
36	18
37	32
38	46
39	60
40	73
41	5
42	77
43	6
44	20
45	34
46	48
47	62
48	76
49	91
50	7
51	97
52	100
53	103
54	106
55	109
56	96
57	9
58	10
59	121
60	124
61	127
62	130
63	133
64	11

n	a(n)
1	1
2	2
3	3
4	4
5	5
6	6
7	7
8	9
9	1
10	13
11	15
12	17
13	19
14	21
15	12
16	25
17	2
18	29
19	31
20	33
21	35
22	14
23	28
24	41
25	3
26	45
27	47
28	49
29	16
30	30
31	44
32	57
33	4
34	61
35	63
36	18
37	32
38	46
39	60
40	73
41	5
42	77
43	6
44	20
45	34
46	48
47	62
48	76
49	91
50	7
51	97
52	100
53	103
54	106
55	109
56	96
57	9
58	10
59	121
60	124
61	127
62	130
63	133
64	11