A030111 - cp's OEIS frontend

A030111 Triangular array in which k-th entry in n-th row is C([ (n+k)/2 ],k) (1<=k<=n).

n	a(n)
1	1
2	1
3	1
4	2
5	1
6	1
7	2
8	3
9	1
10	1
11	3
12	3
13	4
14	1
15	1
16	3
17	6
18	4
19	5
20	1
21	1
22	4
23	6
24	10
25	5
26	6
27	1
28	1
29	4
30	10
31	10
32	15
33	6
34	7
35	1
36	1
37	5
38	10
39	20
40	15
41	21
42	7
43	8
44	1
45	1
46	5
47	15
48	20
49	35
50	21
51	28
52	8
53	9
54	1
55	1
56	6
57	15
58	35
59	35
60	56
61	28
62	36
63	9
64	10
65	1
66	1
67	6
68	21
69	35
70	70
71	56
72	84
73	36
74	45
75	10
76	11
77	1
78	1
79	7
80	21
81	56
82	70
83	126
84	84
85	120
86	45
87	55
88	11
89	12
90	1

[1, 1, 1, 2, 1, 1, 2, 3, 1, 1, 3, 3, 4, 1, 1, 3, 6, 4, 5, 1, 1, 4, 6, 10, 5, 6, 1, 1, 4, 10, 10, 15, 6, 7, 1, 1, 5, 10, 20, 15, 21, 7, 8, 1, 1, 5, 15, 20, 35, 21, 28, 8, 9, 1, 1, 6, 15, 35, 35, 56, 28, 36, 9, 10, 1, 1, 6, 21, 35, 70, 56, 84, 36, 45, 10, 11, 1, 1, 7, 21, 56, 70, 126, 84, 120, 45, 55, 11, 12, 1]

cp's OEIS Frontend

A030111 Triangular array in which k-th entry in n-th row is C([ (n+k)/2 ],k) (1<=k<=n).

Table of values

List of values

n	a(n)
1	1
2	1
3	1
4	2
5	1
6	1
7	2
8	3
9	1
10	1
11	3
12	3
13	4
14	1
15	1
16	3
17	6
18	4
19	5
20	1
21	1
22	4
23	6
24	10
25	5
26	6
27	1
28	1
29	4
30	10
31	10
32	15
33	6
34	7
35	1
36	1
37	5
38	10
39	20
40	15
41	21
42	7
43	8
44	1
45	1
46	5
47	15
48	20
49	35
50	21
51	28
52	8
53	9
54	1
55	1
56	6
57	15
58	35
59	35
60	56
61	28
62	36
63	9
64	10
65	1
66	1
67	6
68	21
69	35
70	70
71	56
72	84
73	36
74	45
75	10
76	11
77	1
78	1
79	7
80	21
81	56
82	70
83	126
84	84
85	120
86	45
87	55
88	11
89	12
90	1

n	a(n)
1	1
2	1
3	1
4	2
5	1
6	1
7	2
8	3
9	1
10	1
11	3
12	3
13	4
14	1
15	1
16	3
17	6
18	4
19	5
20	1
21	1
22	4
23	6
24	10
25	5
26	6
27	1
28	1
29	4
30	10
31	10
32	15
33	6
34	7
35	1
36	1
37	5
38	10
39	20
40	15
41	21
42	7
43	8
44	1
45	1
46	5
47	15
48	20
49	35
50	21
51	28
52	8
53	9
54	1
55	1
56	6
57	15
58	35
59	35
60	56
61	28
62	36
63	9
64	10
65	1
66	1
67	6
68	21
69	35
70	70
71	56
72	84
73	36
74	45
75	10
76	11
77	1
78	1
79	7
80	21
81	56
82	70
83	126
84	84
85	120
86	45
87	55
88	11
89	12
90	1

n	a(n)
1	1
2	1
3	1
4	2
5	1
6	1
7	2
8	3
9	1
10	1
11	3
12	3
13	4
14	1
15	1
16	3
17	6
18	4
19	5
20	1
21	1
22	4
23	6
24	10
25	5
26	6
27	1
28	1
29	4
30	10
31	10
32	15
33	6
34	7
35	1
36	1
37	5
38	10
39	20
40	15
41	21
42	7
43	8
44	1
45	1
46	5
47	15
48	20
49	35
50	21
51	28
52	8
53	9
54	1
55	1
56	6
57	15
58	35
59	35
60	56
61	28
62	36
63	9
64	10
65	1
66	1
67	6
68	21
69	35
70	70
71	56
72	84
73	36
74	45
75	10
76	11
77	1
78	1
79	7
80	21
81	56
82	70
83	126
84	84
85	120
86	45
87	55
88	11
89	12
90	1