A205958 - cp's OEIS frontend

A205958 a(0) = 1 and a(n) = A180000(n)*a(floor(n/2))^2 for n > 0.

n	a(n)
0	1
1	1
2	1
3	1
4	2
5	2
6	3
7	3
8	48
9	16
10	40
11	40
12	270
13	270
14	945
15	63
16	129024
17	129024
18	64512
19	64512
20	2016000
21	96000
22	528000
23	528000
24	144342000
25	28868400
26	187644600
27	20849400
28	1787836050
29	1787836050
30	59594535
31	59594535
32	3999321544458240
33	121191561953280
34	1030128276602880

[1, 1, 1, 1, 2, 2, 3, 3, 48, 16, 40, 40, 270, 270, 945, 63, 129024, 129024, 64512, 64512, 2016000, 96000, 528000, 528000, 144342000, 28868400, 187644600, 20849400, 1787836050, 1787836050, 59594535, 59594535, 3999321544458240, 121191561953280, 1030128276602880]

cp's OEIS Frontend

A205958 a(0) = 1 and a(n) = A180000(n)*a(floor(n/2))^2 for n > 0.

Table of values

List of values