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A370100 as a simple table

na(n)
01
15
247
3500
45615
565005
6767396
79183144
8110995695
91351922495
1016566597047
11204010570296
122522556212228
1331298015910140
14389458822888280
154858487926378000
1660742838865326319
17760901358321592611
189547848458062427405
19119990407515367475700

[1,5,47,500,5615,65005,767396,9183144,110995695,
 1351922495,16566597047,204010570296,2522556212228,
 31298015910140,389458822888280,4858487926378000,
 60742838865326319,760901358321592611,
 9547848458062427405,119990407515367475700]