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A199296 as a simple table

na(n)
11
21
32
44
59
620
745
892
9182
10342
11601
12982
131499
142169
152970
163994
175297
186834
198635
2010714
2113121
2216104
2319674
2423868
2528453
2633637
2739630
2846730

[1,1,2,4,9,20,45,92,182,342,601,982,1499,2169,
 2970,3994,5297,6834,8635,10714,13121,16104,19674,
 23868,28453,33637,39630,46730]