A084334 - cp's OEIS frontend

A084334 a(1) = 1; a(n+1) is the least squarefree m not already used such that |m-a(n)| is not equal to |a(k+1)-a(k)| for any k < n.

n	a(n)
1	1
2	2
3	5
4	3
5	7
6	13
7	6
8	11
9	19
10	10
11	21
12	31
13	14
14	26
15	39
16	15
17	29
18	47
19	17
20	33
21	53
22	22
23	37
24	58
25	23
26	42
27	65
28	38
29	66
30	30
31	55
32	77
33	34
34	67
35	35
36	61
37	95
38	41
39	70
40	107
41	43
42	82
43	122
44	46
45	87
46	129
47	51
48	89
49	133
50	59
51	105
52	57
53	102
54	149
55	62
56	111
57	161
58	69
59	127
60	71
61	123
62	174
63	73
64	130
65	183
66	74

[1, 2, 5, 3, 7, 13, 6, 11, 19, 10, 21, 31, 14, 26, 39, 15, 29, 47, 17, 33, 53, 22, 37, 58, 23, 42, 65, 38, 66, 30, 55, 77, 34, 67, 35, 61, 95, 41, 70, 107, 43, 82, 122, 46, 87, 129, 51, 89, 133, 59, 105, 57, 102, 149, 62, 111, 161, 69, 127, 71, 123, 174, 73, 130, 183, 74]

cp's OEIS Frontend

A084334 a(1) = 1; a(n+1) is the least squarefree m not already used such that |m-a(n)| is not equal to |a(k+1)-a(k)| for any k < n.

Table of values

List of values

n	a(n)
1	1
2	2
3	5
4	3
5	7
6	13
7	6
8	11
9	19
10	10
11	21
12	31
13	14
14	26
15	39
16	15
17	29
18	47
19	17
20	33
21	53
22	22
23	37
24	58
25	23
26	42
27	65
28	38
29	66
30	30
31	55
32	77
33	34
34	67
35	35
36	61
37	95
38	41
39	70
40	107
41	43
42	82
43	122
44	46
45	87
46	129
47	51
48	89
49	133
50	59
51	105
52	57
53	102
54	149
55	62
56	111
57	161
58	69
59	127
60	71
61	123
62	174
63	73
64	130
65	183
66	74

n	a(n)
1	1
2	2
3	5
4	3
5	7
6	13
7	6
8	11
9	19
10	10
11	21
12	31
13	14
14	26
15	39
16	15
17	29
18	47
19	17
20	33
21	53
22	22
23	37
24	58
25	23
26	42
27	65
28	38
29	66
30	30
31	55
32	77
33	34
34	67
35	35
36	61
37	95
38	41
39	70
40	107
41	43
42	82
43	122
44	46
45	87
46	129
47	51
48	89
49	133
50	59
51	105
52	57
53	102
54	149
55	62
56	111
57	161
58	69
59	127
60	71
61	123
62	174
63	73
64	130
65	183
66	74

n	a(n)
1	1
2	2
3	5
4	3
5	7
6	13
7	6
8	11
9	19
10	10
11	21
12	31
13	14
14	26
15	39
16	15
17	29
18	47
19	17
20	33
21	53
22	22
23	37
24	58
25	23
26	42
27	65
28	38
29	66
30	30
31	55
32	77
33	34
34	67
35	35
36	61
37	95
38	41
39	70
40	107
41	43
42	82
43	122
44	46
45	87
46	129
47	51
48	89
49	133
50	59
51	105
52	57
53	102
54	149
55	62
56	111
57	161
58	69
59	127
60	71
61	123
62	174
63	73
64	130
65	183
66	74