A083384 - cp's OEIS frontend

A083384 a(n) = nSum(((k-1)/2)k!*Stirling_2(n,k),k=1..n).

n	a(n)
1	0
2	2
3	27
4	316
5	3825
6	49866
7	706923
8	10899512
9	182218005
10	3289724710
11	63865092159
12	1327750936788
13	29447495757225
14	694257067232834
15	17343019158929235
16	457695211932767344
17	12726295039220109885
18	371902424983010438238
19	11396594412860395106151
20	365458808048854606362380

[0, 2, 27, 316, 3825, 49866, 706923, 10899512, 182218005, 3289724710, 63865092159, 1327750936788, 29447495757225, 694257067232834, 17343019158929235, 457695211932767344, 12726295039220109885, 371902424983010438238, 11396594412860395106151, 365458808048854606362380]

cp's OEIS Frontend

A083384 a(n) = nSum(((k-1)/2)k!*Stirling_2(n,k),k=1..n).

Table of values

List of values

cp's OEIS Frontend

A083384 a(n) = n*Sum(((k-1)/2)*k!*Stirling_2(n,k),k=1..n).

Table of values

List of values

A083384 a(n) = nSum(((k-1)/2)k!*Stirling_2(n,k),k=1..n).