A129587 - cp's OEIS frontend

A129587 a(n) = n!((1 + 3n + n^2)H(n) - n), where H(n) is the n-th harmonic number.

n	a(n)
1	4
2	29
3	191
4	1354
5	10634
6	92700
7	892548
8	9430416
9	108630864
10	1356063840
11	18245210400
12	263298142080
13	4057825368960
14	66527793642240
15	1156298057913600
16	21239191491840000
17	411134620109875200
18	8365635747476582400

[4, 29, 191, 1354, 10634, 92700, 892548, 9430416, 108630864, 1356063840, 18245210400, 263298142080, 4057825368960, 66527793642240, 1156298057913600, 21239191491840000, 411134620109875200, 8365635747476582400]

cp's OEIS Frontend

A129587 a(n) = n!((1 + 3n + n^2)H(n) - n), where H(n) is the n-th harmonic number.

Table of values

List of values

cp's OEIS Frontend

A129587 a(n) = n!*((1 + 3n + n^2)*H(n) - n), where H(n) is the n-th harmonic number.

Table of values

List of values

A129587 a(n) = n!((1 + 3n + n^2)H(n) - n), where H(n) is the n-th harmonic number.