A351489 - cp's OEIS frontend

A351489 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 length 2*n over a binary alphabet, n >= 0, 1 <= k <= 2^n.

n	a(n)
0	0
1	2
2	4
3	4
4	6
5	10
6	12
7	6
8	8
9	12
10	14
11	20
12	22
13	26
14	28
15	8
16	10
17	14
18	16
19	22
20	24
21	28
22	30
23	38
24	40
25	44
26	46
27	52
28	54
29	58
30	60
31	10
32	12
33	16
34	18
35	24
36	26
37	30
38	32
39	40
40	42
41	46
42	48
43	54
44	56
45	60
46	62
47	72
48	74
49	78
50	80
51	86
52	88
53	92
54	94
55	102
56	104
57	108
58	110
59	116
60	118
61	122
62	124
63	12
64	14
65	18
66	20
67	26
68	28
69	32
70	34
71	42
72	44
73	48
74	50
75	56
76	58
77	62

[0, 2, 4, 4, 6, 10, 12, 6, 8, 12, 14, 20, 22, 26, 28, 8, 10, 14, 16, 22, 24, 28, 30, 38, 40, 44, 46, 52, 54, 58, 60, 10, 12, 16, 18, 24, 26, 30, 32, 40, 42, 46, 48, 54, 56, 60, 62, 72, 74, 78, 80, 86, 88, 92, 94, 102, 104, 108, 110, 116, 118, 122, 124, 12, 14, 18, 20, 26, 28, 32, 34, 42, 44, 48, 50, 56, 58, 62]

cp's OEIS Frontend

A351489 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 length 2*n over a binary alphabet, n >= 0, 1 <= k <= 2^n.

Table of values

List of values

n	a(n)
0	0
1	2
2	4
3	4
4	6
5	10
6	12
7	6
8	8
9	12
10	14
11	20
12	22
13	26
14	28
15	8
16	10
17	14
18	16
19	22
20	24
21	28
22	30
23	38
24	40
25	44
26	46
27	52
28	54
29	58
30	60
31	10
32	12
33	16
34	18
35	24
36	26
37	30
38	32
39	40
40	42
41	46
42	48
43	54
44	56
45	60
46	62
47	72
48	74
49	78
50	80
51	86
52	88
53	92
54	94
55	102
56	104
57	108
58	110
59	116
60	118
61	122
62	124
63	12
64	14
65	18
66	20
67	26
68	28
69	32
70	34
71	42
72	44
73	48
74	50
75	56
76	58
77	62

n	a(n)
0	0
1	2
2	4
3	4
4	6
5	10
6	12
7	6
8	8
9	12
10	14
11	20
12	22
13	26
14	28
15	8
16	10
17	14
18	16
19	22
20	24
21	28
22	30
23	38
24	40
25	44
26	46
27	52
28	54
29	58
30	60
31	10
32	12
33	16
34	18
35	24
36	26
37	30
38	32
39	40
40	42
41	46
42	48
43	54
44	56
45	60
46	62
47	72
48	74
49	78
50	80
51	86
52	88
53	92
54	94
55	102
56	104
57	108
58	110
59	116
60	118
61	122
62	124
63	12
64	14
65	18
66	20
67	26
68	28
69	32
70	34
71	42
72	44
73	48
74	50
75	56
76	58
77	62

n	a(n)
0	0
1	2
2	4
3	4
4	6
5	10
6	12
7	6
8	8
9	12
10	14
11	20
12	22
13	26
14	28
15	8
16	10
17	14
18	16
19	22
20	24
21	28
22	30
23	38
24	40
25	44
26	46
27	52
28	54
29	58
30	60
31	10
32	12
33	16
34	18
35	24
36	26
37	30
38	32
39	40
40	42
41	46
42	48
43	54
44	56
45	60
46	62
47	72
48	74
49	78
50	80
51	86
52	88
53	92
54	94
55	102
56	104
57	108
58	110
59	116
60	118
61	122
62	124
63	12
64	14
65	18
66	20
67	26
68	28
69	32
70	34
71	42
72	44
73	48
74	50
75	56
76	58
77	62