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A035820 as a simple table

na(n)
01
1140
29800
3457380
416013200
5448644028
610479036120
7209901182420
83681129969440
957425278222060
10806898799084392
1110316605397801220
12121032811973584560
131312159718129050140
1413225339591553573880

[1,140,9800,457380,16013200,448644028,10479036120,
 209901182420,3681129969440,57425278222060,
 806898799084392,10316605397801220,
 121032811973584560,1312159718129050140,
 13225339591553573880]