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A280571 as a simple table

na(n)
11
24
352
41228
542652
61972324
7114581476
88051020348
9666126945340
1063620722928308
116907454641512244
12842227742687112604
13114192665828161184332
1417076069626235659815108
152796969496541969481342100
16498871283058754285439126092
1796403472225110465517090352700
1820094942949266343527252229063204
194500802213556155723422379457382916
201079478060677848794106956676648220860

[1,4,52,1228,42652,1972324,114581476,8051020348,
 666126945340,63620722928308,6907454641512244,
 842227742687112604,114192665828161184332,
 17076069626235659815108,2796969496541969481342100,
 498871283058754285439126092,
 96403472225110465517090352700,
 20094942949266343527252229063204,
 4500802213556155723422379457382916,
 1079478060677848794106956676648220860]