A351490 - cp's OEIS frontend

A351490 Irregular triangle read by rows: T(n,k) is the minimum number of alphabetic symbols in a regular expression for the k lexicographically first palindromes of odd length 2*n-1 over a binary alphabet, n >= 1, 1 <= k <= 2^n.

n	a(n)
1	1
2	2
3	3
4	4
5	7
6	8
7	5
8	6
9	9
10	10
11	15
12	16
13	19
14	20
15	7
16	8
17	11
18	12
19	17
20	18
21	21
22	22
23	29
24	30
25	33
26	34
27	39
28	40
29	43
30	44
31	9
32	10
33	13
34	14
35	19
36	20
37	23
38	24
39	31
40	32
41	35
42	36
43	41
44	42
45	45
46	46
47	55
48	56
49	59
50	60
51	65
52	66
53	69
54	70
55	77
56	78
57	81
58	82
59	87
60	88
61	91
62	92
63	11
64	12
65	15
66	16
67	21
68	22
69	25
70	26
71	33
72	34
73	37
74	38
75	43
76	44
77	47
78	48
79	57
80	58
81	61
82	62

[1, 2, 3, 4, 7, 8, 5, 6, 9, 10, 15, 16, 19, 20, 7, 8, 11, 12, 17, 18, 21, 22, 29, 30, 33, 34, 39, 40, 43, 44, 9, 10, 13, 14, 19, 20, 23, 24, 31, 32, 35, 36, 41, 42, 45, 46, 55, 56, 59, 60, 65, 66, 69, 70, 77, 78, 81, 82, 87, 88, 91, 92, 11, 12, 15, 16, 21, 22, 25, 26, 33, 34, 37, 38, 43, 44, 47, 48, 57, 58, 61, 62]

cp's OEIS Frontend

A351490 Irregular triangle read by rows: T(n,k) is the minimum number of alphabetic symbols in a regular expression for the k lexicographically first palindromes of odd length 2*n-1 over a binary alphabet, n >= 1, 1 <= k <= 2^n.

Table of values

List of values

n	a(n)
1	1
2	2
3	3
4	4
5	7
6	8
7	5
8	6
9	9
10	10
11	15
12	16
13	19
14	20
15	7
16	8
17	11
18	12
19	17
20	18
21	21
22	22
23	29
24	30
25	33
26	34
27	39
28	40
29	43
30	44
31	9
32	10
33	13
34	14
35	19
36	20
37	23
38	24
39	31
40	32
41	35
42	36
43	41
44	42
45	45
46	46
47	55
48	56
49	59
50	60
51	65
52	66
53	69
54	70
55	77
56	78
57	81
58	82
59	87
60	88
61	91
62	92
63	11
64	12
65	15
66	16
67	21
68	22
69	25
70	26
71	33
72	34
73	37
74	38
75	43
76	44
77	47
78	48
79	57
80	58
81	61
82	62

n	a(n)
1	1
2	2
3	3
4	4
5	7
6	8
7	5
8	6
9	9
10	10
11	15
12	16
13	19
14	20
15	7
16	8
17	11
18	12
19	17
20	18
21	21
22	22
23	29
24	30
25	33
26	34
27	39
28	40
29	43
30	44
31	9
32	10
33	13
34	14
35	19
36	20
37	23
38	24
39	31
40	32
41	35
42	36
43	41
44	42
45	45
46	46
47	55
48	56
49	59
50	60
51	65
52	66
53	69
54	70
55	77
56	78
57	81
58	82
59	87
60	88
61	91
62	92
63	11
64	12
65	15
66	16
67	21
68	22
69	25
70	26
71	33
72	34
73	37
74	38
75	43
76	44
77	47
78	48
79	57
80	58
81	61
82	62

n	a(n)
1	1
2	2
3	3
4	4
5	7
6	8
7	5
8	6
9	9
10	10
11	15
12	16
13	19
14	20
15	7
16	8
17	11
18	12
19	17
20	18
21	21
22	22
23	29
24	30
25	33
26	34
27	39
28	40
29	43
30	44
31	9
32	10
33	13
34	14
35	19
36	20
37	23
38	24
39	31
40	32
41	35
42	36
43	41
44	42
45	45
46	46
47	55
48	56
49	59
50	60
51	65
52	66
53	69
54	70
55	77
56	78
57	81
58	82
59	87
60	88
61	91
62	92
63	11
64	12
65	15
66	16
67	21
68	22
69	25
70	26
71	33
72	34
73	37
74	38
75	43
76	44
77	47
78	48
79	57
80	58
81	61
82	62