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A253032 as a simple table

na(n)
150571
2802899
312647772
4199953846
53170197872
650259172356
7797070583521
812643671566241
9200567370213594
103181733456490459
1150474910281438925
12800736037603303626
1312702959834316206535
14201521446271002086849

[50571,802899,12647772,199953846,3170197872,
 50259172356,797070583521,12643671566241,
 200567370213594,3181733456490459,
 50474910281438925,800736037603303626,
 12702959834316206535,201521446271002086849]