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A277481 as a simple table

na(n)
00
10
22
33
432
5240
63114
744065
8777720
915582168
10357427770
119151281293
12259607392164
138070381333872
14272960010908662
159976300661919345
16391837137436921072
1716458193396472517328
18736145006794621566642
1934932117830021859779517
201752782822664497750549660

[0,0,2,3,32,240,3114,44065,777720,15582168,
 357427770,9151281293,259607392164,8070381333872,
 272960010908662,9976300661919345,
 391837137436921072,16458193396472517328,
 736145006794621566642,34932117830021859779517,
 1752782822664497750549660]