A370220 - cp's OEIS frontend

A370220 Irregular triangle T(n,k) read by rows: row n lists the positions of left parentheses for the properly nested string of parentheses encoded by A063171(n).

n	a(n)
1	1
2	1
3	3
4	1
5	2
6	1
7	3
8	5
9	1
10	3
11	4
12	1
13	2
14	5
15	1
16	2
17	4
18	1
19	2
20	3
21	1
22	3
23	5
24	7
25	1
26	3
27	5
28	6
29	1
30	3
31	4
32	7
33	1
34	3
35	4
36	6
37	1
38	3
39	4
40	5
41	1
42	2
43	5
44	7
45	1
46	2
47	5
48	6
49	1
50	2
51	4
52	7
53	1
54	2
55	4
56	6
57	1
58	2
59	4
60	5
61	1
62	2
63	3
64	7
65	1
66	2
67	3
68	6
69	1
70	2
71	3
72	5
73	1
74	2
75	3
76	4
77	1
78	3
79	5
80	7
81	9
82	1
83	3
84	5
85	7
86	8
87	1
88	3
89	5
90	6
91	9

[1, 1, 3, 1, 2, 1, 3, 5, 1, 3, 4, 1, 2, 5, 1, 2, 4, 1, 2, 3, 1, 3, 5, 7, 1, 3, 5, 6, 1, 3, 4, 7, 1, 3, 4, 6, 1, 3, 4, 5, 1, 2, 5, 7, 1, 2, 5, 6, 1, 2, 4, 7, 1, 2, 4, 6, 1, 2, 4, 5, 1, 2, 3, 7, 1, 2, 3, 6, 1, 2, 3, 5, 1, 2, 3, 4, 1, 3, 5, 7, 9, 1, 3, 5, 7, 8, 1, 3, 5, 6, 9]

cp's OEIS Frontend

A370220 Irregular triangle T(n,k) read by rows: row n lists the positions of left parentheses for the properly nested string of parentheses encoded by A063171(n).

Table of values

List of values

n	a(n)
1	1
2	1
3	3
4	1
5	2
6	1
7	3
8	5
9	1
10	3
11	4
12	1
13	2
14	5
15	1
16	2
17	4
18	1
19	2
20	3
21	1
22	3
23	5
24	7
25	1
26	3
27	5
28	6
29	1
30	3
31	4
32	7
33	1
34	3
35	4
36	6
37	1
38	3
39	4
40	5
41	1
42	2
43	5
44	7
45	1
46	2
47	5
48	6
49	1
50	2
51	4
52	7
53	1
54	2
55	4
56	6
57	1
58	2
59	4
60	5
61	1
62	2
63	3
64	7
65	1
66	2
67	3
68	6
69	1
70	2
71	3
72	5
73	1
74	2
75	3
76	4
77	1
78	3
79	5
80	7
81	9
82	1
83	3
84	5
85	7
86	8
87	1
88	3
89	5
90	6
91	9

n	a(n)
1	1
2	1
3	3
4	1
5	2
6	1
7	3
8	5
9	1
10	3
11	4
12	1
13	2
14	5
15	1
16	2
17	4
18	1
19	2
20	3
21	1
22	3
23	5
24	7
25	1
26	3
27	5
28	6
29	1
30	3
31	4
32	7
33	1
34	3
35	4
36	6
37	1
38	3
39	4
40	5
41	1
42	2
43	5
44	7
45	1
46	2
47	5
48	6
49	1
50	2
51	4
52	7
53	1
54	2
55	4
56	6
57	1
58	2
59	4
60	5
61	1
62	2
63	3
64	7
65	1
66	2
67	3
68	6
69	1
70	2
71	3
72	5
73	1
74	2
75	3
76	4
77	1
78	3
79	5
80	7
81	9
82	1
83	3
84	5
85	7
86	8
87	1
88	3
89	5
90	6
91	9

n	a(n)
1	1
2	1
3	3
4	1
5	2
6	1
7	3
8	5
9	1
10	3
11	4
12	1
13	2
14	5
15	1
16	2
17	4
18	1
19	2
20	3
21	1
22	3
23	5
24	7
25	1
26	3
27	5
28	6
29	1
30	3
31	4
32	7
33	1
34	3
35	4
36	6
37	1
38	3
39	4
40	5
41	1
42	2
43	5
44	7
45	1
46	2
47	5
48	6
49	1
50	2
51	4
52	7
53	1
54	2
55	4
56	6
57	1
58	2
59	4
60	5
61	1
62	2
63	3
64	7
65	1
66	2
67	3
68	6
69	1
70	2
71	3
72	5
73	1
74	2
75	3
76	4
77	1
78	3
79	5
80	7
81	9
82	1
83	3
84	5
85	7
86	8
87	1
88	3
89	5
90	6
91	9