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A167993 as a simple table

na(n)
00
10
21
33
412
536
6117
7351
81080
93240
109801
1129403
1288452
13265356
14796797
152390391
167173360
1721520080
1864566801
19193700403
20581120892
211743362676
225230147077
2315690441231
2447071500840
25141214502520
26423644039001
271270932117003
283812797945332
2911438393835996

[0,0,1,3,12,36,117,351,1080,3240,9801,29403,88452,
 265356,796797,2390391,7173360,21520080,64566801,
 193700403,581120892,1743362676,5230147077,
 15690441231,47071500840,141214502520,423644039001,
 1270932117003,3812797945332,11438393835996]