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A010973 as a simple table

na(n)
201
2121
22231
231771
2410626
2553130
26230230
27888030
283108105
2910015005
3030045015
3184672315
32225792840
33573166440
341391975640
353247943160
367307872110
3715905368710
3833578000610
3968923264410
40137846528820
41269128937220
42513791607420
43960566918220
441761039350070

[1,21,231,1771,10626,53130,230230,888030,3108105,
 10015005,30045015,84672315,225792840,573166440,
 1391975640,3247943160,7307872110,15905368710,
 33578000610,68923264410,137846528820,269128937220,
 513791607420,960566918220,1761039350070]