A370883 - cp's OEIS frontend

A370883 Irregular triangle read by rows: T(n,k) is the number of unmatched right parentheses in the k-th string of parentheses of length n, where strings within a row are in reverse lexicographical order.

n	a(n)
0	0
1	1
2	0
3	2
4	1
5	0
6	0
7	3
8	2
9	1
10	1
11	1
12	0
13	0
14	0
15	4
16	3
17	2
18	2
19	2
20	1
21	1
22	1
23	2
24	1
25	0
26	0
27	0
28	0
29	0
30	0
31	5
32	4
33	3
34	3
35	3
36	2
37	2
38	2
39	3
40	2
41	1
42	1
43	1
44	1
45	1
46	1
47	3
48	2
49	1
50	1
51	1
52	0
53	0
54	0
55	1
56	0
57	0
58	0
59	0
60	0
61	0
62	0
63	6
64	5
65	4
66	4
67	4
68	3
69	3
70	3
71	4
72	3
73	2
74	2
75	2
76	2
77	2
78	2
79	4
80	3
81	2
82	2
83	2
84	1
85	1
86	1
87	2

[0, 1, 0, 2, 1, 0, 0, 3, 2, 1, 1, 1, 0, 0, 0, 4, 3, 2, 2, 2, 1, 1, 1, 2, 1, 0, 0, 0, 0, 0, 0, 5, 4, 3, 3, 3, 2, 2, 2, 3, 2, 1, 1, 1, 1, 1, 1, 3, 2, 1, 1, 1, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 6, 5, 4, 4, 4, 3, 3, 3, 4, 3, 2, 2, 2, 2, 2, 2, 4, 3, 2, 2, 2, 1, 1, 1, 2]

cp's OEIS Frontend

A370883 Irregular triangle read by rows: T(n,k) is the number of unmatched right parentheses in the k-th string of parentheses of length n, where strings within a row are in reverse lexicographical order.

Table of values

List of values

n	a(n)
0	0
1	1
2	0
3	2
4	1
5	0
6	0
7	3
8	2
9	1
10	1
11	1
12	0
13	0
14	0
15	4
16	3
17	2
18	2
19	2
20	1
21	1
22	1
23	2
24	1
25	0
26	0
27	0
28	0
29	0
30	0
31	5
32	4
33	3
34	3
35	3
36	2
37	2
38	2
39	3
40	2
41	1
42	1
43	1
44	1
45	1
46	1
47	3
48	2
49	1
50	1
51	1
52	0
53	0
54	0
55	1
56	0
57	0
58	0
59	0
60	0
61	0
62	0
63	6
64	5
65	4
66	4
67	4
68	3
69	3
70	3
71	4
72	3
73	2
74	2
75	2
76	2
77	2
78	2
79	4
80	3
81	2
82	2
83	2
84	1
85	1
86	1
87	2

n	a(n)
0	0
1	1
2	0
3	2
4	1
5	0
6	0
7	3
8	2
9	1
10	1
11	1
12	0
13	0
14	0
15	4
16	3
17	2
18	2
19	2
20	1
21	1
22	1
23	2
24	1
25	0
26	0
27	0
28	0
29	0
30	0
31	5
32	4
33	3
34	3
35	3
36	2
37	2
38	2
39	3
40	2
41	1
42	1
43	1
44	1
45	1
46	1
47	3
48	2
49	1
50	1
51	1
52	0
53	0
54	0
55	1
56	0
57	0
58	0
59	0
60	0
61	0
62	0
63	6
64	5
65	4
66	4
67	4
68	3
69	3
70	3
71	4
72	3
73	2
74	2
75	2
76	2
77	2
78	2
79	4
80	3
81	2
82	2
83	2
84	1
85	1
86	1
87	2

n	a(n)
0	0
1	1
2	0
3	2
4	1
5	0
6	0
7	3
8	2
9	1
10	1
11	1
12	0
13	0
14	0
15	4
16	3
17	2
18	2
19	2
20	1
21	1
22	1
23	2
24	1
25	0
26	0
27	0
28	0
29	0
30	0
31	5
32	4
33	3
34	3
35	3
36	2
37	2
38	2
39	3
40	2
41	1
42	1
43	1
44	1
45	1
46	1
47	3
48	2
49	1
50	1
51	1
52	0
53	0
54	0
55	1
56	0
57	0
58	0
59	0
60	0
61	0
62	0
63	6
64	5
65	4
66	4
67	4
68	3
69	3
70	3
71	4
72	3
73	2
74	2
75	2
76	2
77	2
78	2
79	4
80	3
81	2
82	2
83	2
84	1
85	1
86	1
87	2