A349269 - cp's OEIS frontend

A349269 Triangle read by rows, T(n, k) = (n - k)! * k! / floor(k / 2)! ^ 2.

n	a(n)
0	1
1	1
2	1
3	2
4	1
5	2
6	6
7	2
8	2
9	6
10	24
11	6
12	4
13	6
14	6
15	120
16	24
17	12
18	12
19	6
20	30
21	720
22	120
23	48
24	36
25	12
26	30
27	20
28	5040
29	720
30	240
31	144
32	36
33	60
34	20
35	140
36	40320
37	5040
38	1440
39	720
40	144
41	180
42	40
43	140
44	70
45	362880
46	40320
47	10080
48	4320
49	720
50	720
51	120
52	280
53	70
54	630

[1, 1, 1, 2, 1, 2, 6, 2, 2, 6, 24, 6, 4, 6, 6, 120, 24, 12, 12, 6, 30, 720, 120, 48, 36, 12, 30, 20, 5040, 720, 240, 144, 36, 60, 20, 140, 40320, 5040, 1440, 720, 144, 180, 40, 140, 70, 362880, 40320, 10080, 4320, 720, 720, 120, 280, 70, 630]

cp's OEIS Frontend

A349269 Triangle read by rows, T(n, k) = (n - k)! * k! / floor(k / 2)! ^ 2.

Table of values

List of values