A085680 - cp's OEIS frontend

A085680 Size of largest code of length n and constant weight 2 that can correct a single adjacent transposition.

n	a(n)
2	1
3	1
4	2
5	3
6	4
7	6
8	7
9	9
10	11
11	13
12	15
13	17
14	20
15	23
16	26
17	29
18	32
19	36
20	40
21	44
22	48
23	52
24	57
25	62
26	67
27	72
28	77
29	83
30	89
31	95
32	101
33	107
34	114
35	121
36	128
37	135
38	142
39	150
40	158
41	166
42	174
43	182
44	191
45	200
46	209
47	218
48	227
49	237
50	247

[1, 1, 2, 3, 4, 6, 7, 9, 11, 13, 15, 17, 20, 23, 26, 29, 32, 36, 40, 44, 48, 52, 57, 62, 67, 72, 77, 83, 89, 95, 101, 107, 114, 121, 128, 135, 142, 150, 158, 166, 174, 182, 191, 200, 209, 218, 227, 237, 247]

cp's OEIS Frontend

A085680 Size of largest code of length n and constant weight 2 that can correct a single adjacent transposition.

Table of values

List of values

n	a(n)
2	1
3	1
4	2
5	3
6	4
7	6
8	7
9	9
10	11
11	13
12	15
13	17
14	20
15	23
16	26
17	29
18	32
19	36
20	40
21	44
22	48
23	52
24	57
25	62
26	67
27	72
28	77
29	83
30	89
31	95
32	101
33	107
34	114
35	121
36	128
37	135
38	142
39	150
40	158
41	166
42	174
43	182
44	191
45	200
46	209
47	218
48	227
49	237
50	247

n	a(n)
2	1
3	1
4	2
5	3
6	4
7	6
8	7
9	9
10	11
11	13
12	15
13	17
14	20
15	23
16	26
17	29
18	32
19	36
20	40
21	44
22	48
23	52
24	57
25	62
26	67
27	72
28	77
29	83
30	89
31	95
32	101
33	107
34	114
35	121
36	128
37	135
38	142
39	150
40	158
41	166
42	174
43	182
44	191
45	200
46	209
47	218
48	227
49	237
50	247

n	a(n)
2	1
3	1
4	2
5	3
6	4
7	6
8	7
9	9
10	11
11	13
12	15
13	17
14	20
15	23
16	26
17	29
18	32
19	36
20	40
21	44
22	48
23	52
24	57
25	62
26	67
27	72
28	77
29	83
30	89
31	95
32	101
33	107
34	114
35	121
36	128
37	135
38	142
39	150
40	158
41	166
42	174
43	182
44	191
45	200
46	209
47	218
48	227
49	237
50	247