A121677 - cp's OEIS frontend

A121677 a(n) = A121676(n)/(n+1) = [x^n] (1 + x*(1+x)^(n-1) )^(n+1) / (n+1).

n	a(n)
0	1
1	1
2	2
3	8
4	50
5	402
6	3932
7	45075
8	588450
9	8580542
10	137799497
11	2410575026
12	45531000715
13	921946835474
14	19895218322982
15	455271977561120
16	11000793881924130
17	279648297003419318
18	7454931579222301709

[1, 1, 2, 8, 50, 402, 3932, 45075, 588450, 8580542, 137799497, 2410575026, 45531000715, 921946835474, 19895218322982, 455271977561120, 11000793881924130, 279648297003419318, 7454931579222301709]

cp's OEIS Frontend

A121677 a(n) = A121676(n)/(n+1) = [x^n] (1 + x*(1+x)^(n-1) )^(n+1) / (n+1).

Table of values

List of values