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A190821 as a simple table

na(n)
17
219
341
4199
5919
65741
718089
841651
990271
10446081
111276001
1227033161
1343220449
1453308529
15109245401
16512669249
17663929729
182266639649
192560742911
202969200961
218505402751
2232540473601
2361573368401
2474335064959
25109494811999

[7,19,41,199,919,5741,18089,41651,90271,446081,
 1276001,27033161,43220449,53308529,109245401,
 512669249,663929729,2266639649,2560742911,
 2969200961,8505402751,32540473601,61573368401,
 74335064959,109494811999]