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A059221 as a simple table

na(n)
01
11
22
34
48
518
643
7103
8255
9642
101640
114242
1211096
1329278
1477882
15208589
16562056
171522606
184144521
1911329608
2031090910
2185618848
22236530942
23655344579
241820585313
255070138554
2614151907583
2739584395796
28110938500821
29311481097178

[1,1,2,4,8,18,43,103,255,642,1640,4242,11096,
 29278,77882,208589,562056,1522606,4144521,
 11329608,31090910,85618848,236530942,655344579,
 1820585313,5070138554,14151907583,39584395796,
 110938500821,311481097178]