A267304 - cp's OEIS frontend

A267304 Earliest nonnegative increasing sequence having no 7-term subsequence with constant second differences.

n	a(n)
1	0
2	1
3	2
4	3
5	4
6	5
7	7
8	8
9	9
10	10
11	11
12	12
13	14
14	15
15	16
16	17
17	18
18	19
19	21
20	24
21	26
22	28
23	29
24	31
25	33
26	35
27	38
28	40
29	41
30	43
31	49
32	50
33	52
34	53
35	58
36	59
37	62
38	63
39	64
40	69
41	70
42	72
43	73
44	77
45	81
46	82

[0, 1, 2, 3, 4, 5, 7, 8, 9, 10, 11, 12, 14, 15, 16, 17, 18, 19, 21, 24, 26, 28, 29, 31, 33, 35, 38, 40, 41, 43, 49, 50, 52, 53, 58, 59, 62, 63, 64, 69, 70, 72, 73, 77, 81, 82]

cp's OEIS Frontend

A267304 Earliest nonnegative increasing sequence having no 7-term subsequence with constant second differences.

Table of values

List of values

n	a(n)
1	0
2	1
3	2
4	3
5	4
6	5
7	7
8	8
9	9
10	10
11	11
12	12
13	14
14	15
15	16
16	17
17	18
18	19
19	21
20	24
21	26
22	28
23	29
24	31
25	33
26	35
27	38
28	40
29	41
30	43
31	49
32	50
33	52
34	53
35	58
36	59
37	62
38	63
39	64
40	69
41	70
42	72
43	73
44	77
45	81
46	82

n	a(n)
1	0
2	1
3	2
4	3
5	4
6	5
7	7
8	8
9	9
10	10
11	11
12	12
13	14
14	15
15	16
16	17
17	18
18	19
19	21
20	24
21	26
22	28
23	29
24	31
25	33
26	35
27	38
28	40
29	41
30	43
31	49
32	50
33	52
34	53
35	58
36	59
37	62
38	63
39	64
40	69
41	70
42	72
43	73
44	77
45	81
46	82

n	a(n)
1	0
2	1
3	2
4	3
5	4
6	5
7	7
8	8
9	9
10	10
11	11
12	12
13	14
14	15
15	16
16	17
17	18
18	19
19	21
20	24
21	26
22	28
23	29
24	31
25	33
26	35
27	38
28	40
29	41
30	43
31	49
32	50
33	52
34	53
35	58
36	59
37	62
38	63
39	64
40	69
41	70
42	72
43	73
44	77
45	81
46	82