A372939 - cp's OEIS frontend

A372939 a(n) = Sum_{1 <= x_1, x_2, ... , x_n <= n} gcd(x_1, x_2, ... , x_n, n)^n.

n	a(n)
1	1
2	7
3	53
4	736
5	6249
6	185039
7	1647085
8	66912256
9	1162222101
10	39980466703
11	570623341221
12	53487845236736
13	605750213184505
14	44446670856053599
15	1751575500459583437
16	92232594468640915456
17	1654480523772673528353
18	236077997761634282622495

[1, 7, 53, 736, 6249, 185039, 1647085, 66912256, 1162222101, 39980466703, 570623341221, 53487845236736, 605750213184505, 44446670856053599, 1751575500459583437, 92232594468640915456, 1654480523772673528353, 236077997761634282622495]

cp's OEIS Frontend

A372939 a(n) = Sum_{1 <= x_1, x_2, ... , x_n <= n} gcd(x_1, x_2, ... , x_n, n)^n.

Table of values

List of values