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A055900 as a simple table

na(n)
41
59
651
7209
8696
91980
105000
1111475
1224375
1348545
1491581
15164934
16285376
17476784
18772416
191217610
201873125
212819025
224159375
236027615
248592936
2512067484
2616714776
2722859109
2830896411
2941306265
3054665625
3171663900

[1,9,51,209,696,1980,5000,11475,24375,48545,91581,
 164934,285376,476784,772416,1217610,1873125,
 2819025,4159375,6027615,8592936,12067484,16714776,
 22859109,30896411,41306265,54665625,71663900]