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A155099 as a simple table

na(n)
11
21
32
44
57
614
727
854
9106
10212
11420
12840
131673
143346
156678
1613356
1726685
1853370
19106686
20213372
21426638
22853276
231706340
243412680
256824940
2613649880

[1,1,2,4,7,14,27,54,106,212,420,840,1673,3346,
 6678,13356,26685,53370,106686,213372,426638,
 853276,1706340,3412680,6824940,13649880]