A119266 - OEIS

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A119266 as a simple table

n	a(n)
0	1
1	1
2	1
3	2
4	4
5	7
6	13
7	25
8	49
9	93
10	181
11	351
12	687
13	1332
14	2591
15	5003
16	9644
17	18462
18	35208
19	66721
20	125840
21	235914
22	440020
23	816122

[1,1,1,2,4,7,13,25,49,93,181,351,687,1332,2591, 5003,9644,18462,35208,66721,125840,235914,440020, 816122]