A368751 - cp's OEIS frontend

A368751 Irregular triangle read by rows: T(n,k) is the number of co-atoms contained in the k-th balanced string of left/right parentheses of length 2*n, where strings within a row are in reverse lexicographical order.

n	a(n)
1	1
2	0
3	1
4	2
5	1
6	1
7	0
8	0
9	1
10	1
11	2
12	1
13	2
14	3
15	2
16	2
17	1
18	1
19	1
20	2
21	1
22	1
23	0
24	0
25	1
26	0
27	0
28	0
29	1
30	1
31	1
32	2
33	1
34	1
35	1
36	2
37	1
38	2
39	3
40	2
41	2
42	1
43	1
44	2
45	2
46	3
47	2
48	3
49	4
50	3
51	3
52	2
53	2
54	2
55	3
56	2
57	2
58	1
59	1
60	2
61	1
62	1
63	1
64	1
65	1
66	2
67	1
68	2
69	3
70	2
71	2
72	1
73	1
74	1
75	2
76	1
77	1
78	0
79	0
80	1
81	0
82	0
83	0
84	1
85	2
86	1
87	1
88	0
89	0
90	1
91	0
92	0
93	0
94	1
95	0
96	0
97	0
98	0

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

cp's OEIS Frontend

A368751 Irregular triangle read by rows: T(n,k) is the number of co-atoms contained in the k-th balanced string of left/right parentheses of length 2*n, where strings within a row are in reverse lexicographical order.

Table of values

List of values

n	a(n)
1	1
2	0
3	1
4	2
5	1
6	1
7	0
8	0
9	1
10	1
11	2
12	1
13	2
14	3
15	2
16	2
17	1
18	1
19	1
20	2
21	1
22	1
23	0
24	0
25	1
26	0
27	0
28	0
29	1
30	1
31	1
32	2
33	1
34	1
35	1
36	2
37	1
38	2
39	3
40	2
41	2
42	1
43	1
44	2
45	2
46	3
47	2
48	3
49	4
50	3
51	3
52	2
53	2
54	2
55	3
56	2
57	2
58	1
59	1
60	2
61	1
62	1
63	1
64	1
65	1
66	2
67	1
68	2
69	3
70	2
71	2
72	1
73	1
74	1
75	2
76	1
77	1
78	0
79	0
80	1
81	0
82	0
83	0
84	1
85	2
86	1
87	1
88	0
89	0
90	1
91	0
92	0
93	0
94	1
95	0
96	0
97	0
98	0

n	a(n)
1	1
2	0
3	1
4	2
5	1
6	1
7	0
8	0
9	1
10	1
11	2
12	1
13	2
14	3
15	2
16	2
17	1
18	1
19	1
20	2
21	1
22	1
23	0
24	0
25	1
26	0
27	0
28	0
29	1
30	1
31	1
32	2
33	1
34	1
35	1
36	2
37	1
38	2
39	3
40	2
41	2
42	1
43	1
44	2
45	2
46	3
47	2
48	3
49	4
50	3
51	3
52	2
53	2
54	2
55	3
56	2
57	2
58	1
59	1
60	2
61	1
62	1
63	1
64	1
65	1
66	2
67	1
68	2
69	3
70	2
71	2
72	1
73	1
74	1
75	2
76	1
77	1
78	0
79	0
80	1
81	0
82	0
83	0
84	1
85	2
86	1
87	1
88	0
89	0
90	1
91	0
92	0
93	0
94	1
95	0
96	0
97	0
98	0

n	a(n)
1	1
2	0
3	1
4	2
5	1
6	1
7	0
8	0
9	1
10	1
11	2
12	1
13	2
14	3
15	2
16	2
17	1
18	1
19	1
20	2
21	1
22	1
23	0
24	0
25	1
26	0
27	0
28	0
29	1
30	1
31	1
32	2
33	1
34	1
35	1
36	2
37	1
38	2
39	3
40	2
41	2
42	1
43	1
44	2
45	2
46	3
47	2
48	3
49	4
50	3
51	3
52	2
53	2
54	2
55	3
56	2
57	2
58	1
59	1
60	2
61	1
62	1
63	1
64	1
65	1
66	2
67	1
68	2
69	3
70	2
71	2
72	1
73	1
74	1
75	2
76	1
77	1
78	0
79	0
80	1
81	0
82	0
83	0
84	1
85	2
86	1
87	1
88	0
89	0
90	1
91	0
92	0
93	0
94	1
95	0
96	0
97	0
98	0