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A140588 as a simple table

na(n)
00
11
22
310
445
5260
61624
711401
886940
9718998
106378625
1160392730
12606757968
136441153821
1471969044394
15843604712450
1610343900299089
17132335197076988
181762486467114856
1924386695159343317
20349913930462291580
215197925007651796446
2279818442443640537653

[0,1,2,10,45,260,1624,11401,86940,718998,6378625,
 60392730,606757968,6441153821,71969044394,
 843604712450,10343900299089,132335197076988,
 1762486467114856,24386695159343317,
 349913930462291580,5197925007651796446,
 79818442443640537653]