A187889 - cp's OEIS frontend

A187889 Riordan matrix (1/(1-x-x^2-x^3),(x+x^2+x^3)/(1-x-x^2-x^3)).

n	a(n)
0	1
1	1
2	1
3	2
4	3
5	1
6	4
7	8
8	5
9	1
10	7
11	19
12	18
13	7
14	1
15	13
16	43
17	54
18	32
19	9
20	1
21	24
22	94
23	147
24	117
25	50
26	11
27	1
28	44
29	200
30	375
31	375
32	216
33	72
34	13
35	1
36	81
37	418
38	913
39	1100
40	799
41	359
42	98
43	15
44	1
45	149
46	861
47	2147
48	3027
49	2657
50	1507
51	554
52	128
53	17
54	1
55	274
56	1753
57	4914
58	7937
59	8174
60	5610
61	2603
62	809
63	162
64	19
65	1

[1, 1, 1, 2, 3, 1, 4, 8, 5, 1, 7, 19, 18, 7, 1, 13, 43, 54, 32, 9, 1, 24, 94, 147, 117, 50, 11, 1, 44, 200, 375, 375, 216, 72, 13, 1, 81, 418, 913, 1100, 799, 359, 98, 15, 1, 149, 861, 2147, 3027, 2657, 1507, 554, 128, 17, 1, 274, 1753, 4914, 7937, 8174, 5610, 2603, 809, 162, 19, 1]

cp's OEIS Frontend

A187889 Riordan matrix (1/(1-x-x^2-x^3),(x+x^2+x^3)/(1-x-x^2-x^3)).

Table of values

List of values