A147750 - cp's OEIS frontend

A147750 Riordan array ((1-x-x^2)/(1-x-2x^2), x(1-x)/(1-2x)).

n	a(n)
0	1
1	0
2	1
3	1
4	1
5	1
6	1
7	3
8	2
9	1
10	3
11	6
12	6
13	3
14	1
15	5
16	14
17	15
18	10
19	4
20	1
21	11
22	30
23	38
24	29
25	15
26	5
27	1
28	21
29	66
30	92
31	81
32	49
33	21
34	6
35	1
36	43
37	142
38	220
39	216
40	150
41	76
42	28
43	7
44	1
45	85
46	306
47	516
48	560
49	435
50	253
51	111
52	36
53	8
54	1

[1, 0, 1, 1, 1, 1, 1, 3, 2, 1, 3, 6, 6, 3, 1, 5, 14, 15, 10, 4, 1, 11, 30, 38, 29, 15, 5, 1, 21, 66, 92, 81, 49, 21, 6, 1, 43, 142, 220, 216, 150, 76, 28, 7, 1, 85, 306, 516, 560, 435, 253, 111, 36, 8, 1]

cp's OEIS Frontend

A147750 Riordan array ((1-x-x^2)/(1-x-2x^2), x(1-x)/(1-2x)).

Table of values

List of values

n	a(n)
0	1
1	0
2	1
3	1
4	1
5	1
6	1
7	3
8	2
9	1
10	3
11	6
12	6
13	3
14	1
15	5
16	14
17	15
18	10
19	4
20	1
21	11
22	30
23	38
24	29
25	15
26	5
27	1
28	21
29	66
30	92
31	81
32	49
33	21
34	6
35	1
36	43
37	142
38	220
39	216
40	150
41	76
42	28
43	7
44	1
45	85
46	306
47	516
48	560
49	435
50	253
51	111
52	36
53	8
54	1

n	a(n)
0	1
1	0
2	1
3	1
4	1
5	1
6	1
7	3
8	2
9	1
10	3
11	6
12	6
13	3
14	1
15	5
16	14
17	15
18	10
19	4
20	1
21	11
22	30
23	38
24	29
25	15
26	5
27	1
28	21
29	66
30	92
31	81
32	49
33	21
34	6
35	1
36	43
37	142
38	220
39	216
40	150
41	76
42	28
43	7
44	1
45	85
46	306
47	516
48	560
49	435
50	253
51	111
52	36
53	8
54	1

n	a(n)
0	1
1	0
2	1
3	1
4	1
5	1
6	1
7	3
8	2
9	1
10	3
11	6
12	6
13	3
14	1
15	5
16	14
17	15
18	10
19	4
20	1
21	11
22	30
23	38
24	29
25	15
26	5
27	1
28	21
29	66
30	92
31	81
32	49
33	21
34	6
35	1
36	43
37	142
38	220
39	216
40	150
41	76
42	28
43	7
44	1
45	85
46	306
47	516
48	560
49	435
50	253
51	111
52	36
53	8
54	1