A115307 - cp's OEIS frontend

A115307 a(n) = if n<7 then n else 7*a(floor(n/7)) + 6 - n mod 7.

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

[1, 2, 3, 4, 5, 6, 13, 12, 11, 10, 9, 8, 7, 20, 19, 18, 17, 16, 15, 14, 27, 26, 25, 24, 23, 22, 21, 34, 33, 32, 31, 30, 29, 28, 41, 40, 39, 38, 37, 36, 35, 48, 47, 46, 45, 44, 43, 42, 97, 96, 95, 94, 93, 92, 91, 90, 89, 88, 87, 86, 85, 84, 83, 82, 81, 80, 79, 78, 77, 76, 75, 74]

cp's OEIS Frontend

A115307 a(n) = if n<7 then n else 7*a(floor(n/7)) + 6 - n mod 7.

Table of values

List of values

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

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

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