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A069921 as a simple table

na(n)
01
15
210
329
473
5194
6505
71325
83466
99077
1023761
1162210
12162865
13426389
141116298
152922509
167651225
1720031170
1852442281
19137295677
20359444746
21941038565
222463670945
236449974274
2416886251873
2544208781349
26115740092170
27303011495165
28793294393321

[1,5,10,29,73,194,505,1325,3466,9077,23761,62210,
 162865,426389,1116298,2922509,7651225,20031170,
 52442281,137295677,359444746,941038565,2463670945,
 6449974274,16886251873,44208781349,115740092170,
 303011495165,793294393321]