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A105476 as a simple table

na(n)
01
11
23
36
415
533
678
7177
8411
9942
102175
115001
1211526
1326529
1461107
15140694
16324015
17746097
181718142
193956433
209110859
2120980158
2248312735
23111253209
24256191414
25589951041
261358525283
273128378406
287203954255
2916589089473
3038200952238
3187968220657

[1,1,3,6,15,33,78,177,411,942,2175,5001,11526,
 26529,61107,140694,324015,746097,1718142,3956433,
 9110859,20980158,48312735,111253209,256191414,
 589951041,1358525283,3128378406,7203954255,
 16589089473,38200952238,87968220657]