A192554 - cp's OEIS frontend

A192554 a(n) = Sum_{k=0..n} abs(Stirling1(n,k))(-1)^(n-k)k!^2.

n	a(n)
0	1
1	1
2	3
3	26
4	398
5	9724
6	344236
7	16663968
8	1056631824
9	84962783664
10	8446120969104
11	1016998946575776
12	145848462866589600
13	24562489788256472064
14	4799789988678066147840
15	1077128972416478325901824
16	275111625956753684599202304

[1, 1, 3, 26, 398, 9724, 344236, 16663968, 1056631824, 84962783664, 8446120969104, 1016998946575776, 145848462866589600, 24562489788256472064, 4799789988678066147840, 1077128972416478325901824, 275111625956753684599202304]

cp's OEIS Frontend

A192554 a(n) = Sum_{k=0..n} abs(Stirling1(n,k))(-1)^(n-k)k!^2.

Table of values

List of values

cp's OEIS Frontend

A192554 a(n) = Sum_{k=0..n} abs(Stirling1(n,k))*(-1)^(n-k)*k!^2.

Table of values

List of values

A192554 a(n) = Sum_{k=0..n} abs(Stirling1(n,k))(-1)^(n-k)k!^2.