A109391 - cp's OEIS frontend

A109391 a(n) = (n^(n+1))(n + 1)/2 = A000217(n)A000312(n).

n	a(n)
0	0
1	1
2	12
3	162
4	2560
5	46875
6	979776
7	23059204
8	603979776
9	17433922005
10	550000000000
11	18830570260326
12	695455834963968
13	27561634699895023
14	1166760716683591680
15	52547266845703125000
16	2508757194024499019776

[0, 1, 12, 162, 2560, 46875, 979776, 23059204, 603979776, 17433922005, 550000000000, 18830570260326, 695455834963968, 27561634699895023, 1166760716683591680, 52547266845703125000, 2508757194024499019776]

cp's OEIS Frontend

A109391 a(n) = (n^(n+1))(n + 1)/2 = A000217(n)A000312(n).

Table of values

List of values

cp's OEIS Frontend

A109391 a(n) = (n^(n+1))*(n + 1)/2 = A000217(n)*A000312(n).

Table of values

List of values

A109391 a(n) = (n^(n+1))(n + 1)/2 = A000217(n)A000312(n).