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A165431 as a simple table

na(n)
01
12
26
316
446
5132
6388
71152
83462
910492
1032036
1198400
12303756
13941576
142928936
159138176
1628584006
1789609196
18281466916
19885620576
202790812196
218806560056
2227823745016
2388005102336
24278637450396
25883024243032
262800748951208

[1,2,6,16,46,132,388,1152,3462,10492,32036,98400,
 303756,941576,2928936,9138176,28584006,89609196,
 281466916,885620576,2790812196,8806560056,
 27823745016,88005102336,278637450396,883024243032,
 2800748951208]