A121207 - cp's OEIS frontend

A121207 Triangle read by rows. The definition is by diagonals. The r-th diagonal from the right, for r >= 0, is given by b(0) = b(1) = 1; b(n+1) = Sum_{k=0..n} binomial(n+2,k+r)*a(k).

n	a(n)
0	1
1	1
2	1
3	1
4	1
5	2
6	1
7	1
8	3
9	5
10	1
11	1
12	4
13	9
14	15
15	1
16	1
17	5
18	14
19	31
20	52
21	1
22	1
23	6
24	20
25	54
26	121
27	203
28	1
29	1
30	7
31	27
32	85
33	233
34	523
35	877
36	1
37	1
38	8
39	35
40	125
41	400
42	1101
43	2469
44	4140
45	1
46	1
47	9
48	44
49	175
50	635
51	2046
52	5625
53	12611
54	21147
55	1
56	1
57	10
58	54
59	236
60	952
61	3488
62	11226
63	30846
64	69161
65	115975

[1, 1, 1, 1, 1, 2, 1, 1, 3, 5, 1, 1, 4, 9, 15, 1, 1, 5, 14, 31, 52, 1, 1, 6, 20, 54, 121, 203, 1, 1, 7, 27, 85, 233, 523, 877, 1, 1, 8, 35, 125, 400, 1101, 2469, 4140, 1, 1, 9, 44, 175, 635, 2046, 5625, 12611, 21147, 1, 1, 10, 54, 236, 952, 3488, 11226, 30846, 69161, 115975]

cp's OEIS Frontend

A121207 Triangle read by rows. The definition is by diagonals. The r-th diagonal from the right, for r >= 0, is given by b(0) = b(1) = 1; b(n+1) = Sum_{k=0..n} binomial(n+2,k+r)*a(k).

Table of values

List of values