A335797 - cp's OEIS frontend

A335797 a(n) = n! * [x^n] exp(Sum_{k=1..n, gcd(n,k) = 1} x^k / k!).

n	a(n)
0	1
1	1
2	1
3	4
4	5
5	51
6	7
7	876
8	457
9	7678
10	5271
11	678569
12	10705
13	27644436
14	5060161
15	133924576
16	197920145
17	82864869803
18	173283535
19	5832742205056
20	98269310261
21	34660429169122
22	25313714237505
23	44152005855084345
24	13685698802401
25	2410161938206898126
26	129066382491033573

[1, 1, 1, 4, 5, 51, 7, 876, 457, 7678, 5271, 678569, 10705, 27644436, 5060161, 133924576, 197920145, 82864869803, 173283535, 5832742205056, 98269310261, 34660429169122, 25313714237505, 44152005855084345, 13685698802401, 2410161938206898126, 129066382491033573]

cp's OEIS Frontend

A335797 a(n) = n! * [x^n] exp(Sum_{k=1..n, gcd(n,k) = 1} x^k / k!).

Table of values

List of values