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A125818 as a simple table

na(n)
11
21
319
455
5433
61801
710963
852543
9291457
101476145
117907059
1240908583
13216237169
141127920249
155931872371
1631038388975
17162918608257
18853489829089
194476595998547
2023462519091607
21123027170158513
22644917164874345
233381296222443411
2417726184247750687

[1,1,19,55,433,1801,10963,52543,291457,1476145,
 7907059,40908583,216237169,1127920249,5931872371,
 31038388975,162918608257,853489829089,
 4476595998547,23462519091607,123027170158513,
 644917164874345,3381296222443411,
 17726184247750687]