A055807 - cp's OEIS frontend

A055807 Triangle T read by rows: T(i,j) = R(i-j,j), where R(i,0) = 1 for i >= 0, R(0,j) = 0 for j >= 1, and R(i,j) = Sum_{h=0..i-1, k=0..j} R(h,k) for i >= 1 and j >= 1.

n	a(n)
0	1
1	1
2	0
3	1
4	1
5	0
6	1
7	3
8	1
9	0
10	1
11	7
12	4
13	1
14	0
15	1
16	15
17	12
18	5
19	1
20	0
21	1
22	31
23	32
24	18
25	6
26	1
27	0
28	1
29	63
30	80
31	56
32	25
33	7
34	1
35	0
36	1
37	127
38	192
39	160
40	88
41	33
42	8
43	1
44	0
45	1
46	255
47	448
48	432
49	280
50	129
51	42
52	9
53	1
54	0
55	1
56	511
57	1024
58	1120
59	832
60	450
61	180
62	52
63	10
64	1
65	0
66	1
67	1023

[1, 1, 0, 1, 1, 0, 1, 3, 1, 0, 1, 7, 4, 1, 0, 1, 15, 12, 5, 1, 0, 1, 31, 32, 18, 6, 1, 0, 1, 63, 80, 56, 25, 7, 1, 0, 1, 127, 192, 160, 88, 33, 8, 1, 0, 1, 255, 448, 432, 280, 129, 42, 9, 1, 0, 1, 511, 1024, 1120, 832, 450, 180, 52, 10, 1, 0, 1, 1023]

cp's OEIS Frontend

A055807 Triangle T read by rows: T(i,j) = R(i-j,j), where R(i,0) = 1 for i >= 0, R(0,j) = 0 for j >= 1, and R(i,j) = Sum_{h=0..i-1, k=0..j} R(h,k) for i >= 1 and j >= 1.

Table of values

List of values