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A116408 as a simple table

na(n)
00
10
21
32
47
520
661
7182
8546
91632
104875
1114542
1243340
13129064
14384111
151142610
163397656
1710100448
1830020283
1989213094
20265096455
21787695636
222340488535
236954401762
2420664628438
2561406952800
26182488572045
27542358944946

[0,0,1,2,7,20,61,182,546,1632,4875,14542,43340,
 129064,384111,1142610,3397656,10100448,30020283,
 89213094,265096455,787695636,2340488535,
 6954401762,20664628438,61406952800,182488572045,
 542358944946]