A153906 - OEIS

A153906 as a simple table

n	a(n)
0	1
1	2
2	2
3	3
4	3
5	4
6	6
7	11
8	18
9	31
10	50
11	107
12	181
13	433
14	779
15	1919
16	3907
17	10795
18	25121
19	75000
20	190622
21	625348
22	1698419
23	6161541
24	18153209
25	72093319
26	233832256
27	1013942489
28	3627226950
29	17175822290
30	67626821845

[1,2,2,3,3,4,6,11,18,31,50,107,181,433,779,1919, 3907,10795,25121,75000,190622,625348,1698419, 6161541,18153209,72093319,233832256,1013942489, 3627226950,17175822290,67626821845]

[1,2,2,3,3,4,6,11,18,31,50,107,181,433,779,1919,
 3907,10795,25121,75000,190622,625348,1698419,
 6161541,18153209,72093319,233832256,1013942489,
 3627226950,17175822290,67626821845]