A367274 - cp's OEIS frontend

A367274 a(n) = binomial(n, k) * (n - k)^k where k = floor(n/2).

n	a(n)
0	1
1	1
2	2
3	6
4	24
5	90
6	540
7	2240
8	17920
9	78750
10	787500
11	3592512
12	43110144
13	201885684
14	2826399576
15	13495173120
16	215922769920
17	1046465787510
18	18836384175180
19	92378000000000
20	1847560000000000
21	9148544655566316
22	201267982422458952
23	1004605271823089664
24	24110526523754151936

[1, 1, 2, 6, 24, 90, 540, 2240, 17920, 78750, 787500, 3592512, 43110144, 201885684, 2826399576, 13495173120, 215922769920, 1046465787510, 18836384175180, 92378000000000, 1847560000000000, 9148544655566316, 201267982422458952, 1004605271823089664, 24110526523754151936]

cp's OEIS Frontend

A367274 a(n) = binomial(n, k) * (n - k)^k where k = floor(n/2).

Table of values

List of values