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A290955
as a simple table
n
a(n)
1
0
2
1
3
3
4
7
5
12
6
13
7
21
8
40
9
67
10
69
11
132
12
213
13
259
14
1056
15
1639
16
1653
17
2913
18
6183
19
7086
20
8466
21
27475
22
55390
[0,1,3,7,12,13,21,40,67,69,132,213,259,1056,1639, 1653,2913,6183,7086,8466,27475,55390]