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A259856 as a simple table

na(n)
11
21
32
42
52
64
718
848
996
10194
11398
12992
132614
146496
1515512
1637536
1792366
18231544
19583442
201464452
213680362
229310622

[1,1,2,2,2,4,18,48,96,194,398,992,2614,6496,15512,
 37536,92366,231544,583442,1464452,3680362,9310622]