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A375354 as a simple table

na(n)
11
21
32
41
54
620
71
88
9104
101504
111
1216
13544
1422208
15948032
161
1732
182848
19329216
2040930304
215204262912
221
2364
2414912
254883968
261772261888
27666548862976
28254112496082944
291
30128
3178080
3272464384
3376795762688
3485575149027328
3597392800416399360
36111879597850371293184

[1,1,2,1,4,20,1,8,104,1504,1,16,544,22208,948032,
 1,32,2848,329216,40930304,5204262912,1,64,14912,
 4883968,1772261888,666548862976,254112496082944,1,
 128,78080,72464384,76795762688,85575149027328,
 97392800416399360,111879597850371293184]