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A273437 as a simple table

na(n)
61
763
82842
9116172
104654713
11189142107
127923937307
13345104368752
1415688849238062
15745831503236820
1637094603885430728
171929672890969261256
18104918114960824458448
195956513043619244790970
20352719666690509340493680
2121759830035878816514854144

[1,63,2842,116172,4654713,189142107,7923937307,
 345104368752,15688849238062,745831503236820,
 37094603885430728,1929672890969261256,
 104918114960824458448,5956513043619244790970,
 352719666690509340493680,
 21759830035878816514854144]