A120485 - cp's OEIS frontend

A120485 a(n) = n^n - (n-1)^n + (n-2)^n - ... + (-1)^(k+n)k^n + ... + (-1)^(2+n)2^n + (-1)^(1+n)1^n = Sum_{k=1..n} (-1)^(k+n)k^n.

n	a(n)
0	1
1	1
2	3
3	20
4	190
5	2313
6	34461
7	607408
8	12360636
9	285188825
10	7356173275
11	209762134236
12	6552069616170
13	222481706868337
14	8159714626124985
15	321456928026650816
16	13538204870285608696
17	606979028986115413329

[1, 1, 3, 20, 190, 2313, 34461, 607408, 12360636, 285188825, 7356173275, 209762134236, 6552069616170, 222481706868337, 8159714626124985, 321456928026650816, 13538204870285608696, 606979028986115413329]

cp's OEIS Frontend

A120485 a(n) = n^n - (n-1)^n + (n-2)^n - ... + (-1)^(k+n)k^n + ... + (-1)^(2+n)2^n + (-1)^(1+n)1^n = Sum_{k=1..n} (-1)^(k+n)k^n.

Table of values

List of values

cp's OEIS Frontend

A120485 a(n) = n^n - (n-1)^n + (n-2)^n - ... + (-1)^(k+n)*k^n + ... + (-1)^(2+n)*2^n + (-1)^(1+n)*1^n = Sum_{k=1..n} (-1)^(k+n)*k^n.

Table of values

List of values

A120485 a(n) = n^n - (n-1)^n + (n-2)^n - ... + (-1)^(k+n)k^n + ... + (-1)^(2+n)2^n + (-1)^(1+n)1^n = Sum_{k=1..n} (-1)^(k+n)k^n.