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A020123 as a simple table

na(n)
01
11
21
31
43
512
663
7393
82863
923715
10220205
112264966
1225561752
13314044379
144172303890
1559604341273
16911094930877
1714837831731420
18256482519928832
194689966078698629
2090449345803473559
211834829586299035049

[1,1,1,1,3,12,63,393,2863,23715,220205,2264966,
 25561752,314044379,4172303890,59604341273,
 911094930877,14837831731420,256482519928832,
 4689966078698629,90449345803473559,
 1834829586299035049]