A123681 - cp's OEIS frontend

A123681 a(n) = (1/(n+1)) * Sum_{k=0..n} C(n+k-1,k)*k! = A123680(n)/(n+1).

n	a(n)
0	1
1	1
2	3
3	19
4	197
5	2841
6	52327
7	1171871
8	30899529
9	937529317
10	32173291931
11	1232093935227
12	52088478142861
13	2409578607253169
14	121067200114483407
15	6565538372492694871
16	382234458749760846737
17	23777755561583494209981

[1, 1, 3, 19, 197, 2841, 52327, 1171871, 30899529, 937529317, 32173291931, 1232093935227, 52088478142861, 2409578607253169, 121067200114483407, 6565538372492694871, 382234458749760846737, 23777755561583494209981]

cp's OEIS Frontend

A123681 a(n) = (1/(n+1)) * Sum_{k=0..n} C(n+k-1,k)*k! = A123680(n)/(n+1).

Table of values

List of values