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A347324 as a simple table

na(n)
00
12
212
348
4167
5541
61692
75187
815700
947030
10139986
11415385
121230417
133638657
1410744058
1531705658
1693563017
17276079102
18814408697
192402076923
207085491321
2120902994644
2261668276920
23181926014930
24536710980085
251583529043750
264672393755494
2713786612213841

[0,2,12,48,167,541,1692,5187,15700,47030,139986,
 415385,1230417,3638657,10744058,31705658,93563017,
 276079102,814408697,2402076923,7085491321,
 20902994644,61668276920,181926014930,536710980085,
 1583529043750,4672393755494,13786612213841]