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A054593 as a simple table

na(n)
10
21
310
4262
521496
66433336
77566317200
835247649746352
9648839620390462336
1047230175230392839683456
1113617860445102311268975051520
1215577054031612736747163633737901312

[0,1,10,262,21496,6433336,7566317200,
 35247649746352,648839620390462336,
 47230175230392839683456,
 13617860445102311268975051520,
 15577054031612736747163633737901312]