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A054199 as a simple table

na(n)
01
12
24
38
417
539
695
7240
8619
91615
104241
1111184
1229601
1378645
14209830
15562454
161515325
174104547
1811180365
1930627574
2084375837
21233729358
22650888094
231821718080
245122765105
2514468782826
2641031251163
27116789504201
28333544999893
29955496210873
302744724190487

[1,2,4,8,17,39,95,240,619,1615,4241,11184,29601,
 78645,209830,562454,1515325,4104547,11180365,
 30627574,84375837,233729358,650888094,1821718080,
 5122765105,14468782826,41031251163,116789504201,
 333544999893,955496210873,2744724190487]