A008279 - cp's OEIS frontend

A008279 Triangle T(n,k) = n!/(n-k)! (0 <= k <= n) read by rows, giving number of permutations of n things k at a time.

n	a(n)
0	1
1	1
2	1
3	1
4	2
5	2
6	1
7	3
8	6
9	6
10	1
11	4
12	12
13	24
14	24
15	1
16	5
17	20
18	60
19	120
20	120
21	1
22	6
23	30
24	120
25	360
26	720
27	720
28	1
29	7
30	42
31	210
32	840
33	2520
34	5040
35	5040
36	1
37	8
38	56
39	336
40	1680
41	6720
42	20160
43	40320
44	40320
45	1
46	9
47	72
48	504
49	3024
50	15120
51	60480
52	181440
53	362880
54	362880

[1, 1, 1, 1, 2, 2, 1, 3, 6, 6, 1, 4, 12, 24, 24, 1, 5, 20, 60, 120, 120, 1, 6, 30, 120, 360, 720, 720, 1, 7, 42, 210, 840, 2520, 5040, 5040, 1, 8, 56, 336, 1680, 6720, 20160, 40320, 40320, 1, 9, 72, 504, 3024, 15120, 60480, 181440, 362880, 362880]

cp's OEIS Frontend

A008279 Triangle T(n,k) = n!/(n-k)! (0 <= k <= n) read by rows, giving number of permutations of n things k at a time.

Table of values

List of values