A055818 - cp's OEIS frontend

A055818 Triangle T read by rows: T(i,j) = R(i-j,j), where R(i,0) = R(0,i) = 1 for i >= 0, R(i,j) = Sum_{h=0..i-1} Sum_{m=0..j} R(h,m) for i >= 1, j >= 1.

n	a(n)
0	1
1	1
2	1
3	1
4	2
5	1
6	1
7	5
8	3
9	1
10	1
11	11
12	9
13	4
14	1
15	1
16	23
17	24
18	14
19	5
20	1
21	1
22	47
23	60
24	43
25	20
26	6
27	1
28	1
29	95
30	144
31	122
32	69
33	27
34	7
35	1
36	1
37	191
38	336
39	328
40	217
41	103
42	35
43	8
44	1
45	1
46	383
47	768
48	848
49	640
50	354
51	146
52	44
53	9
54	1
55	1
56	767
57	1728
58	2128
59	1800
60	1131
61	543
62	199
63	54
64	10
65	1

[1, 1, 1, 1, 2, 1, 1, 5, 3, 1, 1, 11, 9, 4, 1, 1, 23, 24, 14, 5, 1, 1, 47, 60, 43, 20, 6, 1, 1, 95, 144, 122, 69, 27, 7, 1, 1, 191, 336, 328, 217, 103, 35, 8, 1, 1, 383, 768, 848, 640, 354, 146, 44, 9, 1, 1, 767, 1728, 2128, 1800, 1131, 543, 199, 54, 10, 1]

cp's OEIS Frontend

A055818 Triangle T read by rows: T(i,j) = R(i-j,j), where R(i,0) = R(0,i) = 1 for i >= 0, R(i,j) = Sum_{h=0..i-1} Sum_{m=0..j} R(h,m) for i >= 1, j >= 1.

Table of values

List of values