A232205 - cp's OEIS frontend

A232205 a(0)=1; thereafter a(n) = na(n-1) if n is even, otherwise a(n) = 2n*a(n-1).

n	a(n)
0	1
1	2
2	4
3	24
4	96
5	960
6	5760
7	80640
8	645120
9	11612160
10	116121600
11	2554675200
12	30656102400
13	797058662400
14	11158821273600
15	334764638208000
16	5356234211328000
17	182111963185152000
18	3278015337332736000
19	124564582818643968000
20	2491291656372879360000
21	104634249567660933120000
22	2301953490488540528640000

[1, 2, 4, 24, 96, 960, 5760, 80640, 645120, 11612160, 116121600, 2554675200, 30656102400, 797058662400, 11158821273600, 334764638208000, 5356234211328000, 182111963185152000, 3278015337332736000, 124564582818643968000, 2491291656372879360000, 104634249567660933120000, 2301953490488540528640000]

cp's OEIS Frontend

A232205 a(0)=1; thereafter a(n) = na(n-1) if n is even, otherwise a(n) = 2n*a(n-1).

Table of values

List of values

cp's OEIS Frontend

A232205 a(0)=1; thereafter a(n) = n*a(n-1) if n is even, otherwise a(n) = 2*n*a(n-1).

Table of values

List of values

A232205 a(0)=1; thereafter a(n) = na(n-1) if n is even, otherwise a(n) = 2n*a(n-1).