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A074523 as a simple table

na(n)
03
116
2114
3856
46498
549576
6379794
72920696
822542018
9174571336
101356217074
1110567261336
1282560763938
13646644824296
145076269583954
1539931933598776
16314707907280258
172484430327672456
1819642812107392434
19155514083261229016

[3,16,114,856,6498,49576,379794,2920696,22542018,
 174571336,1356217074,10567261336,82560763938,
 646644824296,5076269583954,39931933598776,
 314707907280258,2484430327672456,
 19642812107392434,155514083261229016]