A027926 - cp's OEIS frontend

A027926 Triangular array T read by rows: T(n,0) = T(n,2n) = 1 for n >= 0; T(n,1) = 1 for n >= 1; T(n,k) = T(n-1,k-2) + T(n-1,k-1) for k = 2..2n-1, n >= 2.

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

[1, 1, 1, 1, 1, 1, 2, 2, 1, 1, 1, 2, 3, 4, 3, 1, 1, 1, 2, 3, 5, 7, 7, 4, 1, 1, 1, 2, 3, 5, 8, 12, 14, 11, 5, 1, 1, 1, 2, 3, 5, 8, 13, 20, 26, 25, 16, 6, 1, 1, 1, 2, 3, 5, 8, 13, 21, 33, 46, 51, 41, 22, 7, 1, 1, 1, 2, 3, 5, 8, 13, 21, 34, 54, 79, 97, 92, 63, 29, 8, 1]

cp's OEIS Frontend

A027926 Triangular array T read by rows: T(n,0) = T(n,2n) = 1 for n >= 0; T(n,1) = 1 for n >= 1; T(n,k) = T(n-1,k-2) + T(n-1,k-1) for k = 2..2n-1, n >= 2.

Table of values

List of values

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

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

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