A193520 - cp's OEIS frontend

A193520 a(n) = Sum_{k=0..n} G(n)/(G(k)*G(n-k)) where G(n) = Product_{k=0..n} k!.

n	a(n)
0	1
1	2
2	4
3	14
4	122
5	3122
6	260642
7	76214882
8	85552669442
9	381014246511362
10	7442029915221081602
11	632869669701185574873602
12	264542347321693265938488883202
13	517169258108069965039831739271321602
14	5495073385198979486456081260457854269542402

[1, 2, 4, 14, 122, 3122, 260642, 76214882, 85552669442, 381014246511362, 7442029915221081602, 632869669701185574873602, 264542347321693265938488883202, 517169258108069965039831739271321602, 5495073385198979486456081260457854269542402]

cp's OEIS Frontend

A193520 a(n) = Sum_{k=0..n} G(n)/(G(k)*G(n-k)) where G(n) = Product_{k=0..n} k!.

Table of values

List of values