A368853 - cp's OEIS frontend

A368853 a(n) = n! * (n+1)! * Sum_{k=0..n} (-1)^k/(k! * (k+1)!).

n	a(n)
0	1
1	1
2	7
3	83
4	1661
5	49829
6	2092819
7	117197863
8	8438246137
9	759442152329
10	83538636756191
11	11027100051817211
12	1720227608083484917
13	313081424671194254893
14	65747099180950793527531
15	15779303803428190446607439
16	4291970634532467801477223409

[1, 1, 7, 83, 1661, 49829, 2092819, 117197863, 8438246137, 759442152329, 83538636756191, 11027100051817211, 1720227608083484917, 313081424671194254893, 65747099180950793527531, 15779303803428190446607439, 4291970634532467801477223409]

cp's OEIS Frontend

A368853 a(n) = n! * (n+1)! * Sum_{k=0..n} (-1)^k/(k! * (k+1)!).

Table of values

List of values