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A054927 as a simple table

na(n)
11
20
30
41
54
617
7122
81512
932692
101332942
11105327842
1215931236010
134514847754466
142400986640234092
152424697785383015323
164646743375611622382082
1716785578201380816581985232
18114710315501226850209685442155

[1,0,0,1,4,17,122,1512,32692,1332942,105327842,
 15931236010,4514847754466,2400986640234092,
 2424697785383015323,4646743375611622382082,
 16785578201380816581985232,
 114710315501226850209685442155]