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A242566 as a simple table

na(n)
00
11
21
33
47
522
667
7225
8765
92704
109710
1135558
12131859
13494892
141874901
157162807
1627558511
17106695148
18415346144
191624780952
206383671910
2125179642120
2299670897534
23395810459602
241576464630375
256295827843098

[0,1,1,3,7,22,67,225,765,2704,9710,35558,131859,
 494892,1874901,7162807,27558511,106695148,
 415346144,1624780952,6383671910,25179642120,
 99670897534,395810459602,1576464630375,
 6295827843098]