A355171 - cp's OEIS frontend

A355171 a(n) = Sum_{k=0..n} binomial(n, k + 1)k!(n + 1)!/(k + 2)!.

n	a(n)
0	0
1	1
2	7
3	50
4	406
5	3804
6	41028
7	506064
8	7084656
9	111690720
10	1967421600
11	38425449600
12	825970435200
13	19404363283200
14	495012834489600
15	13632039812966400
16	403120633444300800
17	12740557701389414400
18	428546132879432601600
19	15284163618598275072000
20	576073025410937628672000

[0, 1, 7, 50, 406, 3804, 41028, 506064, 7084656, 111690720, 1967421600, 38425449600, 825970435200, 19404363283200, 495012834489600, 13632039812966400, 403120633444300800, 12740557701389414400, 428546132879432601600, 15284163618598275072000, 576073025410937628672000]

cp's OEIS Frontend

A355171 a(n) = Sum_{k=0..n} binomial(n, k + 1)k!(n + 1)!/(k + 2)!.

Table of values

List of values

cp's OEIS Frontend

A355171 a(n) = Sum_{k=0..n} binomial(n, k + 1)*k!*(n + 1)!/(k + 2)!.

Table of values

List of values

A355171 a(n) = Sum_{k=0..n} binomial(n, k + 1)k!(n + 1)!/(k + 2)!.