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A253470 as a simple table

na(n)
11
25
336
4280
52201
617325
7136396
81073840
98454321
1066560725
11524031476
124125691080
1332481497161
14255726286205
152013328792476
1615850904053600
17124793903636321
18982500325036965
197735208696659396
2060899169248238200
21479458145289246201
223774765993065731405

[1,5,36,280,2201,17325,136396,1073840,8454321,
 66560725,524031476,4125691080,32481497161,
 255726286205,2013328792476,15850904053600,
 124793903636321,982500325036965,7735208696659396,
 60899169248238200,479458145289246201,
 3774765993065731405]