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A282336 as a simple table

na(n)
10
20
350800
43025368
5182122160
610612378412
7584739260830
831572290506580
91674538977289754
1087493618239027172
114520664945568841240
12231421657900928943448
1311755513680739322402812
14593268429722114221349400

[0,0,50800,3025368,182122160,10612378412,
 584739260830,31572290506580,1674538977289754,
 87493618239027172,4520664945568841240,
 231421657900928943448,11755513680739322402812,
 593268429722114221349400]