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A325908
as a simple table
n
a(n)
0
1
1
1
2
1
3
2
4
2
5
4
6
7
7
12
8
22
9
40
10
76
11
142
12
268
13
500
14
944
15
1788
16
3389
17
6444
18
12286
19
23464
[1,1,1,2,2,4,7,12,22,40,76,142,268,500,944,1788, 3389,6444,12286,23464]