A354686 - cp's OEIS frontend

A354686 a(n) = n! * Sum_{k=1..n} Stirling1(n,k) * H(k), where H(k) is the k-th harmonic number.

n	a(n)
0	0
1	1
2	1
3	-4
4	38
5	-646
6	17124
7	-651120
8	33563760
9	-2251415376
10	190506294720
11	-19843054116480
12	2494435702953600
13	-372324067662349440
14	65089674982557308160
15	-13172994619821785548800
16	3055455516855073351219200
17	-805168341051328705189939200

[0, 1, 1, -4, 38, -646, 17124, -651120, 33563760, -2251415376, 190506294720, -19843054116480, 2494435702953600, -372324067662349440, 65089674982557308160, -13172994619821785548800, 3055455516855073351219200, -805168341051328705189939200]

cp's OEIS Frontend

A354686 a(n) = n! * Sum_{k=1..n} Stirling1(n,k) * H(k), where H(k) is the k-th harmonic number.

Table of values

List of values