A094870 - cp's OEIS frontend

A094870 a(1)=1; for n > 1, a(n) is the minimal positive integer t not equal to a(1), ..., a(n-1) such that t - a(n-i) is not equal to a(n-i) - a(n-2i) for all 1 <= i < n/2.

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

[1, 2, 4, 3, 5, 6, 8, 7, 10, 9, 13, 12, 14, 11, 17, 16, 22, 15, 23, 18, 21, 20, 25, 24, 26, 19, 28, 27, 29, 36, 32, 31, 33, 39, 38, 34, 41, 30, 37, 35, 44, 48, 42, 40, 43, 50, 46, 52, 47, 45, 54, 49, 56, 58, 57, 51, 61, 53, 59, 63, 60, 68, 64, 62, 70, 55, 65, 67, 73, 69, 83, 76]

cp's OEIS Frontend

A094870 a(1)=1; for n > 1, a(n) is the minimal positive integer t not equal to a(1), ..., a(n-1) such that t - a(n-i) is not equal to a(n-i) - a(n-2i) for all 1 <= i < n/2.

Table of values

List of values

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

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

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