A336258 - cp's OEIS frontend

A336258 a(0) = 1; a(n) = (n!)^2 * Sum_{k=0..n-1} a(k) / (k! * (n-k))^2.

n	a(n)
0	1
1	1
2	5
3	58
4	1208
5	39476
6	1861372
7	119587224
8	10040970816
9	1067383279872
10	140110136642304
11	22256626639796352
12	4207858001708629248
13	933704296260740939520
14	240293228328619963492608
15	70992050129486593239246336
16	23863916105454465092261412864

[1, 1, 5, 58, 1208, 39476, 1861372, 119587224, 10040970816, 1067383279872, 140110136642304, 22256626639796352, 4207858001708629248, 933704296260740939520, 240293228328619963492608, 70992050129486593239246336, 23863916105454465092261412864]

cp's OEIS Frontend

A336258 a(0) = 1; a(n) = (n!)^2 * Sum_{k=0..n-1} a(k) / (k! * (n-k))^2.

Table of values

List of values