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A051366 as a simple table

na(n)
00
10
20
30
4112
539761
65318420
7506289623
841378309308
93133123494417
10227657567966500
1116152548751321851
121129224692910819164
1378169242144478858373
145373159786842137703140
15367368738925063893430959

[0,0,0,0,112,39761,5318420,506289623,41378309308,
 3133123494417,227657567966500,16152548751321851,
 1129224692910819164,78169242144478858373,
 5373159786842137703140,367368738925063893430959]