login
The OEIS is supported by
the many generous donors to the OEIS Foundation
.
Hints
(Greetings from
The On-Line Encyclopedia of Integer Sequences
!)
A006144
as a simple table
n
a(n)
4
0
5
1
6
0
7
0
8
0
9
4
10
5
11
6
12
11
13
31
14
72
15
157
16
312
17
700
18
1472
19
3446
20
7855
[0,1,0,0,0,4,5,6,11,31,72,157,312,700,1472,3446, 7855]