A026374 - cp's OEIS frontend

A026374 Triangular array T read by rows: T(n,0) = T(n,n) = 1 for all n >= 0, T(n,k) = T(n-1,k-1) + T(n-1,k) for odd n and 1< = k <= n-1, T(n,k) = T(n-1,k-1) + T(n-1,k) + T(n-2,k-1) for even n and 1 <= k <= n-1.

n	a(n)
0	1
1	1
2	1
3	1
4	3
5	1
6	1
7	4
8	4
9	1
10	1
11	6
12	11
13	6
14	1
15	1
16	7
17	17
18	17
19	7
20	1
21	1
22	9
23	30
24	45
25	30
26	9
27	1
28	1
29	10
30	39
31	75
32	75
33	39
34	10
35	1
36	1
37	12
38	58
39	144
40	195
41	144
42	58
43	12
44	1
45	1
46	13
47	70
48	202
49	339
50	339
51	202
52	70
53	13
54	1
55	1
56	15
57	95
58	330
59	685
60	873
61	685
62	330
63	95
64	15
65	1

[1, 1, 1, 1, 3, 1, 1, 4, 4, 1, 1, 6, 11, 6, 1, 1, 7, 17, 17, 7, 1, 1, 9, 30, 45, 30, 9, 1, 1, 10, 39, 75, 75, 39, 10, 1, 1, 12, 58, 144, 195, 144, 58, 12, 1, 1, 13, 70, 202, 339, 339, 202, 70, 13, 1, 1, 15, 95, 330, 685, 873, 685, 330, 95, 15, 1]

cp's OEIS Frontend

A026374 Triangular array T read by rows: T(n,0) = T(n,n) = 1 for all n >= 0, T(n,k) = T(n-1,k-1) + T(n-1,k) for odd n and 1< = k <= n-1, T(n,k) = T(n-1,k-1) + T(n-1,k) + T(n-2,k-1) for even n and 1 <= k <= n-1.

Table of values

List of values

n	a(n)
0	1
1	1
2	1
3	1
4	3
5	1
6	1
7	4
8	4
9	1
10	1
11	6
12	11
13	6
14	1
15	1
16	7
17	17
18	17
19	7
20	1
21	1
22	9
23	30
24	45
25	30
26	9
27	1
28	1
29	10
30	39
31	75
32	75
33	39
34	10
35	1
36	1
37	12
38	58
39	144
40	195
41	144
42	58
43	12
44	1
45	1
46	13
47	70
48	202
49	339
50	339
51	202
52	70
53	13
54	1
55	1
56	15
57	95
58	330
59	685
60	873
61	685
62	330
63	95
64	15
65	1

n	a(n)
0	1
1	1
2	1
3	1
4	3
5	1
6	1
7	4
8	4
9	1
10	1
11	6
12	11
13	6
14	1
15	1
16	7
17	17
18	17
19	7
20	1
21	1
22	9
23	30
24	45
25	30
26	9
27	1
28	1
29	10
30	39
31	75
32	75
33	39
34	10
35	1
36	1
37	12
38	58
39	144
40	195
41	144
42	58
43	12
44	1
45	1
46	13
47	70
48	202
49	339
50	339
51	202
52	70
53	13
54	1
55	1
56	15
57	95
58	330
59	685
60	873
61	685
62	330
63	95
64	15
65	1

n	a(n)
0	1
1	1
2	1
3	1
4	3
5	1
6	1
7	4
8	4
9	1
10	1
11	6
12	11
13	6
14	1
15	1
16	7
17	17
18	17
19	7
20	1
21	1
22	9
23	30
24	45
25	30
26	9
27	1
28	1
29	10
30	39
31	75
32	75
33	39
34	10
35	1
36	1
37	12
38	58
39	144
40	195
41	144
42	58
43	12
44	1
45	1
46	13
47	70
48	202
49	339
50	339
51	202
52	70
53	13
54	1
55	1
56	15
57	95
58	330
59	685
60	873
61	685
62	330
63	95
64	15
65	1