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A343365 as a simple table

na(n)
01
11
28
372
4604
55148
643544
7368408
83112262
926273542
10221605240
111867736120
1215730022540
13132385106956
141113413229000
159358220560136
1678606905495809
17659886123312449
185536404584185376
1946424396382193376
20389074608184431328
213259085506224931424
2227286163457927575200

[1,1,8,72,604,5148,43544,368408,3112262,26273542,
 221605240,1867736120,15730022540,132385106956,
 1113413229000,9358220560136,78606905495809,
 659886123312449,5536404584185376,
 46424396382193376,389074608184431328,
 3259085506224931424,27286163457927575200]