A379612 - cp's OEIS frontend

A379612 a(n) = (n + 1)^(n - 1) + (n + 1)^(n - 2), by convention a(1) = 1.

n	a(n)
0	2
1	1
2	4
3	20
4	150
5	1512
6	19208
7	294912
8	5314410
9	110000000
10	2572306572
11	67077144576
12	1930018885886
13	60743477544960
14	2075941406250000
15	76561193665298432
16	3030800878069216722
17	128186171713071710208
18	5768828271352423353620
19	275251200000000000000000
20	13879377432727741655370342

[2, 1, 4, 20, 150, 1512, 19208, 294912, 5314410, 110000000, 2572306572, 67077144576, 1930018885886, 60743477544960, 2075941406250000, 76561193665298432, 3030800878069216722, 128186171713071710208, 5768828271352423353620, 275251200000000000000000, 13879377432727741655370342]

cp's OEIS Frontend

A379612 a(n) = (n + 1)^(n - 1) + (n + 1)^(n - 2), by convention a(1) = 1.

Table of values

List of values