A337011 - cp's OEIS frontend

A337011 a(n) = 2^n * exp(-1/2) * Sum_{k>=0} (k + 2)^n / (2^k * k!).

n	a(n)
0	1
1	5
2	27
3	159
4	1025
5	7221
6	55307
7	457631
8	4065569
9	38566021
10	388757083
11	4146851583
12	46636281185
13	551163837685
14	6825500514059
15	88341860285631
16	1192267628956353
17	16743728349797765
18	244221140242647579
19	3693367920926321375
20	57821628101627115329

[1, 5, 27, 159, 1025, 7221, 55307, 457631, 4065569, 38566021, 388757083, 4146851583, 46636281185, 551163837685, 6825500514059, 88341860285631, 1192267628956353, 16743728349797765, 244221140242647579, 3693367920926321375, 57821628101627115329]

cp's OEIS Frontend

A337011 a(n) = 2^n * exp(-1/2) * Sum_{k>=0} (k + 2)^n / (2^k * k!).

Table of values

List of values