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A100620 as a simple table

na(n)
00
11
21
31
47
519
641
7751
8989
92857
1016067
11434293
121364651
138181904909
1490241897
155044289
1615043611773
175026792806787
18203732352169
1969028763155644023
201145302367137
211022779523247467
22396760150748100749
23750218743980105669781
2435200969735190093

[0,1,1,1,7,19,41,751,989,2857,16067,434293,
 1364651,8181904909,90241897,5044289,15043611773,
 5026792806787,203732352169,69028763155644023,
 1145302367137,1022779523247467,396760150748100749,
 750218743980105669781,35200969735190093]