A337040 - cp's OEIS frontend

A337040 a(n) = exp(-1/4) * Sum_{k>=0} (4k - 1)^n / (4^k k!).

n	a(n)
0	1
1	0
2	4
3	16
4	112
5	896
6	8384
7	88320
8	1032448
9	13242368
10	184591360
11	2773929984
12	44641579008
13	765196926976
14	13905753980928
15	266855007453184
16	5388980396818432
17	114172599765827584
18	2530858142594760704
19	58556990344729198592
20	1411095950792925904896
21	35347148031264582270976

[1, 0, 4, 16, 112, 896, 8384, 88320, 1032448, 13242368, 184591360, 2773929984, 44641579008, 765196926976, 13905753980928, 266855007453184, 5388980396818432, 114172599765827584, 2530858142594760704, 58556990344729198592, 1411095950792925904896, 35347148031264582270976]

cp's OEIS Frontend

A337040 a(n) = exp(-1/4) * Sum_{k>=0} (4k - 1)^n / (4^k k!).

Table of values

List of values

cp's OEIS Frontend

A337040 a(n) = exp(-1/4) * Sum_{k>=0} (4*k - 1)^n / (4^k * k!).

Table of values

List of values

A337040 a(n) = exp(-1/4) * Sum_{k>=0} (4k - 1)^n / (4^k k!).