A108041 - cp's OEIS frontend

A108041 Triangle of numbers {a(n,k), n >= 0, 0<=k<=n} defined by a(0,0)=1, a(n,0)=a(n-1,n-1), a(n,k)=a(n,k-1) + Sum_{i=0..k-1} a(n-1,i).

n	a(n)
0	1
1	1
2	2
3	2
4	3
5	7
6	7
7	9
8	19
9	42
10	42
11	49
12	100
13	210
14	443
15	443
16	485
17	977
18	2005
19	4120
20	8473
21	8473
22	8916
23	17874
24	36240
25	73508
26	149131
27	302615
28	302615
29	311088
30	622619
31	1254196
32	2526758
33	5090784
34	10257191
35	20667866
36	20667866
37	20970481
38	41949435
39	84210401
40	169052379

[1, 1, 2, 2, 3, 7, 7, 9, 19, 42, 42, 49, 100, 210, 443, 443, 485, 977, 2005, 4120, 8473, 8473, 8916, 17874, 36240, 73508, 149131, 302615, 302615, 311088, 622619, 1254196, 2526758, 5090784, 10257191, 20667866, 20667866, 20970481, 41949435, 84210401, 169052379]

cp's OEIS Frontend

A108041 Triangle of numbers {a(n,k), n >= 0, 0<=k<=n} defined by a(0,0)=1, a(n,0)=a(n-1,n-1), a(n,k)=a(n,k-1) + Sum_{i=0..k-1} a(n-1,i).

Table of values

List of values