A329965 - cp's OEIS frontend

A329965 a(n) = ((1+n)floor(1+n/2))(n!/floor(1+n/2)!)^2.

n	a(n)
0	1
1	2
2	6
3	72
4	240
5	7200
6	25200
7	1411200
8	5080320
9	457228800
10	1676505600
11	221298739200
12	821966745600
13	149597947699200
14	560992303872000
15	134638152929280000
16	508633022177280000
17	155641704786247680000
18	591438478187741184000
19	224746621711341649920000

[1, 2, 6, 72, 240, 7200, 25200, 1411200, 5080320, 457228800, 1676505600, 221298739200, 821966745600, 149597947699200, 560992303872000, 134638152929280000, 508633022177280000, 155641704786247680000, 591438478187741184000, 224746621711341649920000]

cp's OEIS Frontend

A329965 a(n) = ((1+n)floor(1+n/2))(n!/floor(1+n/2)!)^2.

Table of values

List of values

cp's OEIS Frontend

A329965 a(n) = ((1+n)*floor(1+n/2))*(n!/floor(1+n/2)!)^2.

Table of values

List of values

A329965 a(n) = ((1+n)floor(1+n/2))(n!/floor(1+n/2)!)^2.