A368752 - cp's OEIS frontend

A368752 Irregular triangle read by rows: T(n,k) is the number of atoms + 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	1
3	1
4	2
5	2
6	2
7	2
8	1
9	1
10	1
11	2
12	2
13	2
14	3
15	3
16	3
17	3
18	2
19	2
20	3
21	3
22	3
23	3
24	2
25	2
26	2
27	1
28	1
29	1
30	1
31	1
32	2
33	2
34	1
35	1
36	2
37	2
38	2
39	3
40	3
41	3
42	3
43	2
44	2
45	2
46	3
47	3
48	3
49	4
50	4
51	4
52	4
53	3
54	3
55	4
56	4
57	4
58	4
59	3
60	3
61	3
62	2
63	2
64	2
65	2
66	3
67	3
68	3
69	4
70	4
71	4
72	4
73	3
74	3
75	4
76	4
77	4
78	4
79	3
80	3
81	3
82	2
83	2
84	2
85	3
86	3
87	3
88	3
89	2
90	2
91	2
92	1
93	1
94	2
95	2
96	1
97	1
98	1

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

cp's OEIS Frontend

A368752 Irregular triangle read by rows: T(n,k) is the number of atoms + 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	1
3	1
4	2
5	2
6	2
7	2
8	1
9	1
10	1
11	2
12	2
13	2
14	3
15	3
16	3
17	3
18	2
19	2
20	3
21	3
22	3
23	3
24	2
25	2
26	2
27	1
28	1
29	1
30	1
31	1
32	2
33	2
34	1
35	1
36	2
37	2
38	2
39	3
40	3
41	3
42	3
43	2
44	2
45	2
46	3
47	3
48	3
49	4
50	4
51	4
52	4
53	3
54	3
55	4
56	4
57	4
58	4
59	3
60	3
61	3
62	2
63	2
64	2
65	2
66	3
67	3
68	3
69	4
70	4
71	4
72	4
73	3
74	3
75	4
76	4
77	4
78	4
79	3
80	3
81	3
82	2
83	2
84	2
85	3
86	3
87	3
88	3
89	2
90	2
91	2
92	1
93	1
94	2
95	2
96	1
97	1
98	1

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

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