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A370608 as a simple table

na(n)
11
22
33
410
525
6156
7721
85356
940881
10366850
113628801
1240048086
13479001601
146228391456
1587184121025
161307724593176
1720922789888001
18355689166978146
196402373705728001
20121645161595446490
212432902128489747201
2251090943465394571376
231124000727777607680001

[1,2,3,10,25,156,721,5356,40881,366850,3628801,
 40048086,479001601,6228391456,87184121025,
 1307724593176,20922789888001,355689166978146,
 6402373705728001,121645161595446490,
 2432902128489747201,51090943465394571376,
 1124000727777607680001]