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A307397 as a simple table

na(n)
01
11
21
33
48
518
650
7150
8429
91258
103835
1111740
1236148
13112856
14355318
151124582
163582186
1711477162
1836939043
19119387415
20387393424
211261422550
224120343870
2313498085604
2444337516318
25145993301239
26481812344551
271593439356575
285280074015618
2917528034861180

[1,1,1,3,8,18,50,150,429,1258,3835,11740,36148,
 112856,355318,1124582,3582186,11477162,36939043,
 119387415,387393424,1261422550,4120343870,
 13498085604,44337516318,145993301239,481812344551,
 1593439356575,5280074015618,17528034861180]