A117178 - cp's OEIS frontend

A117178 Riordan array (c(x^2)/sqrt(1-4x^2), xc(x^2)), c(x) the g.f. of A000108.

n	a(n)
0	1
1	0
2	1
3	3
4	0
5	1
6	0
7	4
8	0
9	1
10	10
11	0
12	5
13	0
14	1
15	0
16	15
17	0
18	6
19	0
20	1
21	35
22	0
23	21
24	0
25	7
26	0
27	1
28	0
29	56
30	0
31	28
32	0
33	8
34	0
35	1
36	126
37	0
38	84
39	0
40	36
41	0
42	9
43	0
44	1
45	0
46	210
47	0
48	120
49	0
50	45
51	0
52	10
53	0
54	1
55	462
56	0
57	330
58	0
59	165
60	0
61	55
62	0
63	11
64	0
65	1
66	0
67	792
68	0
69	495
70	0
71	220
72	0
73	66
74	0
75	12
76	0
77	1

[1, 0, 1, 3, 0, 1, 0, 4, 0, 1, 10, 0, 5, 0, 1, 0, 15, 0, 6, 0, 1, 35, 0, 21, 0, 7, 0, 1, 0, 56, 0, 28, 0, 8, 0, 1, 126, 0, 84, 0, 36, 0, 9, 0, 1, 0, 210, 0, 120, 0, 45, 0, 10, 0, 1, 462, 0, 330, 0, 165, 0, 55, 0, 11, 0, 1, 0, 792, 0, 495, 0, 220, 0, 66, 0, 12, 0, 1]

cp's OEIS Frontend

A117178 Riordan array (c(x^2)/sqrt(1-4x^2), xc(x^2)), c(x) the g.f. of A000108.

Table of values

List of values

n	a(n)
0	1
1	0
2	1
3	3
4	0
5	1
6	0
7	4
8	0
9	1
10	10
11	0
12	5
13	0
14	1
15	0
16	15
17	0
18	6
19	0
20	1
21	35
22	0
23	21
24	0
25	7
26	0
27	1
28	0
29	56
30	0
31	28
32	0
33	8
34	0
35	1
36	126
37	0
38	84
39	0
40	36
41	0
42	9
43	0
44	1
45	0
46	210
47	0
48	120
49	0
50	45
51	0
52	10
53	0
54	1
55	462
56	0
57	330
58	0
59	165
60	0
61	55
62	0
63	11
64	0
65	1
66	0
67	792
68	0
69	495
70	0
71	220
72	0
73	66
74	0
75	12
76	0
77	1

n	a(n)
0	1
1	0
2	1
3	3
4	0
5	1
6	0
7	4
8	0
9	1
10	10
11	0
12	5
13	0
14	1
15	0
16	15
17	0
18	6
19	0
20	1
21	35
22	0
23	21
24	0
25	7
26	0
27	1
28	0
29	56
30	0
31	28
32	0
33	8
34	0
35	1
36	126
37	0
38	84
39	0
40	36
41	0
42	9
43	0
44	1
45	0
46	210
47	0
48	120
49	0
50	45
51	0
52	10
53	0
54	1
55	462
56	0
57	330
58	0
59	165
60	0
61	55
62	0
63	11
64	0
65	1
66	0
67	792
68	0
69	495
70	0
71	220
72	0
73	66
74	0
75	12
76	0
77	1

cp's OEIS Frontend

A117178 Riordan array (c(x^2)/sqrt(1-4*x^2), x*c(x^2)), c(x) the g.f. of A000108.

Table of values

List of values

A117178 Riordan array (c(x^2)/sqrt(1-4x^2), xc(x^2)), c(x) the g.f. of A000108.

n	a(n)
0	1
1	0
2	1
3	3
4	0
5	1
6	0
7	4
8	0
9	1
10	10
11	0
12	5
13	0
14	1
15	0
16	15
17	0
18	6
19	0
20	1
21	35
22	0
23	21
24	0
25	7
26	0
27	1
28	0
29	56
30	0
31	28
32	0
33	8
34	0
35	1
36	126
37	0
38	84
39	0
40	36
41	0
42	9
43	0
44	1
45	0
46	210
47	0
48	120
49	0
50	45
51	0
52	10
53	0
54	1
55	462
56	0
57	330
58	0
59	165
60	0
61	55
62	0
63	11
64	0
65	1
66	0
67	792
68	0
69	495
70	0
71	220
72	0
73	66
74	0
75	12
76	0
77	1