A353014 - cp's OEIS frontend

A353014 a(n) = Sum_{k=0..floor(n/3)} (n-3k)^(n-2k).

n	a(n)
0	1
1	1
2	4
3	27
4	257
5	3133
6	46737
7	824568
8	16792857
9	387700668
10	10005768898
11	285445966496
12	8919588913002
13	302975146962245
14	11115146328067250
15	438000914977377939
16	18450682450377791691
17	827395864513198608177
18	39352977767853205024131

[1, 1, 4, 27, 257, 3133, 46737, 824568, 16792857, 387700668, 10005768898, 285445966496, 8919588913002, 302975146962245, 11115146328067250, 438000914977377939, 18450682450377791691, 827395864513198608177, 39352977767853205024131]

cp's OEIS Frontend

A353014 a(n) = Sum_{k=0..floor(n/3)} (n-3k)^(n-2k).

Table of values

List of values

cp's OEIS Frontend

A353014 a(n) = Sum_{k=0..floor(n/3)} (n-3*k)^(n-2*k).

Table of values

List of values

A353014 a(n) = Sum_{k=0..floor(n/3)} (n-3k)^(n-2k).