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A262718 as a simple table

na(n)
00
10
22
318
4194
52550
639962
7730002
815257090
9359376750
109424209002
11272385029466
128604312602690
13294957765448710
1410906288759973882
15432701819402940450
1618336112083960655874
17826578941145375829470
1839497618599385891373002
191994276034034710498109674

[0,0,2,18,194,2550,39962,730002,15257090,
 359376750,9424209002,272385029466,8604312602690,
 294957765448710,10906288759973882,
 432701819402940450,18336112083960655874,
 826578941145375829470,39497618599385891373002,
 1994276034034710498109674]