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A110103 as a simple table

na(n)
01
10
20
315
41855
5469980
6214402650
7160081596675
8182667234224475
9302414315250247200
10697372026302486234700
112167773244010692751057625
128842276105055583472501844625
1346275602006744820263447546152500

[1,0,0,15,1855,469980,214402650,160081596675,
 182667234224475,302414315250247200,
 697372026302486234700,2167773244010692751057625,
 8842276105055583472501844625,
 46275602006744820263447546152500]