A107867 - cp's OEIS frontend

A107867 Triangle, read by rows, where T(n,k) = C(n(n-1)/2-k(k-1)/2+n-k+1,n-k).

n	a(n)
0	1
1	2
2	1
3	6
4	3
5	1
6	35
7	15
8	4
9	1
10	330
11	120
12	28
13	5
14	1
15	4368
16	1365
17	286
18	45
19	6
20	1
21	74613
22	20349
23	3876
24	560
25	66
26	7
27	1
28	1560780
29	376740
30	65780
31	8855
32	969
33	91
34	8
35	1
36	38608020
37	8347680
38	1344904
39	169911
40	17550
41	1540
42	120
43	9
44	1
45	1101716330
46	215553195
47	32224114

[1, 2, 1, 6, 3, 1, 35, 15, 4, 1, 330, 120, 28, 5, 1, 4368, 1365, 286, 45, 6, 1, 74613, 20349, 3876, 560, 66, 7, 1, 1560780, 376740, 65780, 8855, 969, 91, 8, 1, 38608020, 8347680, 1344904, 169911, 17550, 1540, 120, 9, 1, 1101716330, 215553195, 32224114]

cp's OEIS Frontend

A107867 Triangle, read by rows, where T(n,k) = C(n(n-1)/2-k(k-1)/2+n-k+1,n-k).

Table of values

List of values

cp's OEIS Frontend

A107867 Triangle, read by rows, where T(n,k) = C(n*(n-1)/2-k*(k-1)/2+n-k+1,n-k).

Table of values

List of values

A107867 Triangle, read by rows, where T(n,k) = C(n(n-1)/2-k(k-1)/2+n-k+1,n-k).