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A324936 as a simple table

na(n)
11
21
32
44
58
617
737
883
9189
10436
111014
122373
135578
1413156
1531104
1673665
17174665
18414427
19983606
202334488

[1,1,2,4,8,17,37,83,189,436,1014,2373,5578,13156,
 31104,73665,174665,414427,983606,2334488]