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A054198 as a simple table

na(n)
01
12
25
312
429
570
6169
7409
8995
92439
106033
1115068
1238005
1396807
14249049
15647137
161698303
174500410
1812038113
1932489271
2088423967
21242549338
22670146047
231863859739
245215185383
2514671904315
2641478618523
27117776926366
28335729266137

[1,2,5,12,29,70,169,409,995,2439,6033,15068,38005,
 96807,249049,647137,1698303,4500410,12038113,
 32489271,88423967,242549338,670146047,1863859739,
 5215185383,14671904315,41478618523,117776926366,
 335729266137]