A109267 - cp's OEIS frontend

A109267 Riordan array (1/(1 - xc(x) - x^2c(x)^2), x*c(x)) where c(x) is the g.f. of A000108.

n	a(n)
0	1
1	1
2	1
3	3
4	2
5	1
6	9
7	6
8	3
9	1
10	29
11	19
12	10
13	4
14	1
15	97
16	63
17	34
18	15
19	5
20	1
21	333
22	215
23	118
24	55
25	21
26	6
27	1
28	1165
29	749
30	416
31	201
32	83
33	28
34	7
35	1
36	4135
37	2650
38	1485
39	736
40	320
41	119
42	36
43	8
44	1
45	14845
46	9490
47	5355
48	2705
49	1220
50	484
51	164
52	45
53	9
54	1
55	53791
56	34318
57	19473
58	9983
59	4628
60	1923
61	703
62	219
63	55
64	10
65	1

[1, 1, 1, 3, 2, 1, 9, 6, 3, 1, 29, 19, 10, 4, 1, 97, 63, 34, 15, 5, 1, 333, 215, 118, 55, 21, 6, 1, 1165, 749, 416, 201, 83, 28, 7, 1, 4135, 2650, 1485, 736, 320, 119, 36, 8, 1, 14845, 9490, 5355, 2705, 1220, 484, 164, 45, 9, 1, 53791, 34318, 19473, 9983, 4628, 1923, 703, 219, 55, 10, 1]

cp's OEIS Frontend

A109267 Riordan array (1/(1 - xc(x) - x^2c(x)^2), x*c(x)) where c(x) is the g.f. of A000108.

Table of values

List of values

cp's OEIS Frontend

A109267 Riordan array (1/(1 - x*c(x) - x^2*c(x)^2), x*c(x)) where c(x) is the g.f. of A000108.

Table of values

List of values

A109267 Riordan array (1/(1 - xc(x) - x^2c(x)^2), x*c(x)) where c(x) is the g.f. of A000108.