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A226594 as a simple table

na(n)
01
11
21
31
42
53
66
711
822
942
10102
11204
12488
131078
142723
156403
1616479
1740313
18106135
19271295
20724455

[1,1,1,1,2,3,6,11,22,42,102,204,488,1078,2723,
 6403,16479,40313,106135,271295,724455]