A387205 - cp's OEIS frontend

A387205 a(n) = (n - 1)!*(2 + Harmonic(n - 1)) if n >= 1, and a(0) = 1.

n	a(n)
0	1
1	2
2	3
3	7
4	23
5	98
6	514
7	3204
8	23148
9	190224
10	1752336
11	17886240
12	200377440
13	2444446080
14	32256800640
15	457822229760
16	6954511737600
17	112579862169600
18	1934780446771200
19	35181735469977600
20	674855347635302400
21	13618752053114880000
22	288426695123589120000
23	6396478234890670080000

[1, 2, 3, 7, 23, 98, 514, 3204, 23148, 190224, 1752336, 17886240, 200377440, 2444446080, 32256800640, 457822229760, 6954511737600, 112579862169600, 1934780446771200, 35181735469977600, 674855347635302400, 13618752053114880000, 288426695123589120000, 6396478234890670080000]

cp's OEIS Frontend

A387205 a(n) = (n - 1)!*(2 + Harmonic(n - 1)) if n >= 1, and a(0) = 1.

Table of values

List of values