A353016 - cp's OEIS frontend

A353016 a(n) = Sum_{k=0..floor(n/2)} (n-2k)^(2k).

n	a(n)
0	1
1	1
2	1
3	2
4	5
5	11
6	33
7	108
8	357
9	1405
10	5713
11	24670
12	117413
13	574007
14	3004577
15	16608120
16	95057925
17	576245913
18	3622049809
19	23693870554
20	161816447365
21	1140392550275
22	8351286979745
23	63206781102116
24	493344133444389
25	3980464191557205
26	33029872125113937
27	282290255465835382

[1, 1, 1, 2, 5, 11, 33, 108, 357, 1405, 5713, 24670, 117413, 574007, 3004577, 16608120, 95057925, 576245913, 3622049809, 23693870554, 161816447365, 1140392550275, 8351286979745, 63206781102116, 493344133444389, 3980464191557205, 33029872125113937, 282290255465835382]

cp's OEIS Frontend

A353016 a(n) = Sum_{k=0..floor(n/2)} (n-2k)^(2k).

Table of values

List of values

cp's OEIS Frontend

A353016 a(n) = Sum_{k=0..floor(n/2)} (n-2*k)^(2*k).

Table of values

List of values

A353016 a(n) = Sum_{k=0..floor(n/2)} (n-2k)^(2k).