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A220124 as a simple table

na(n)
01
11
22
34
47
513
646
788
8209
9473
101002
112120
125197
1311085
1425384
1557234
16126959
17279883
18640387
191412460
203182794
217138463
2215963680
2335593612
2480143244
25178644947
26400681480
27897313564
282008904252
294492651815
3010074017008
3122526314856
3250459193392

[1,1,2,4,7,13,46,88,209,473,1002,2120,5197,11085,
 25384,57234,126959,279883,640387,1412460,3182794,
 7138463,15963680,35593612,80143244,178644947,
 400681480,897313564,2008904252,4492651815,
 10074017008,22526314856,50459193392]