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A147356 as a simple table

na(n)
11
21
31
41
51
63
79
820
953
10182
11863
124532
1325697
14176361
151505241
1614929100

[1,1,1,1,1,3,9,20,53,182,863,4532,25697,176361,
 1505241,14929100]