A230714 - cp's OEIS frontend

A230714 a(n) = lcm(1,2,...,n)*a(floor(n/2))^2 for n > 0, a(0) = 1.

n	a(n)
0	1
1	1
2	2
3	6
4	48
5	240
6	2160
7	15120
8	1935360
9	5806080
10	145152000
11	1596672000
12	129330432000
13	1681295616000
14	82383485184000
15	82383485184000
16	2699542042509312000
17	45892214722658304000
18	413029932503924736000
19	7847568717574569984000
20	4904730448484106240000000

[1, 1, 2, 6, 48, 240, 2160, 15120, 1935360, 5806080, 145152000, 1596672000, 129330432000, 1681295616000, 82383485184000, 82383485184000, 2699542042509312000, 45892214722658304000, 413029932503924736000, 7847568717574569984000, 4904730448484106240000000]

cp's OEIS Frontend

A230714 a(n) = lcm(1,2,...,n)*a(floor(n/2))^2 for n > 0, a(0) = 1.

Table of values

List of values