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A219405 as a simple table

na(n)
14
228
3181
41180
57687
650077
7326233
82125270
913845268
1090196219
11587591326
123827916001
1324937299865
14162456261409
151058335787620
166894622770400
1744915634248581
18292606900638904
191906213721217931
2012418199102692513

[4,28,181,1180,7687,50077,326233,2125270,13845268,
 90196219,587591326,3827916001,24937299865,
 162456261409,1058335787620,6894622770400,
 44915634248581,292606900638904,1906213721217931,
 12418199102692513]