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A001627 as a simple table

na(n)
11
20
32
444
51008
634432
71629280
8101401344
98030787968
10788377273856
1193933191303424
1213350759115563520
132231133728986759168
14433075048506207645696
1596617322164029448916992
1624549315871469898190266368
177047652261245574026565877760

[1,0,2,44,1008,34432,1629280,101401344,8030787968,
 788377273856,93933191303424,13350759115563520,
 2231133728986759168,433075048506207645696,
 96617322164029448916992,
 24549315871469898190266368,
 7047652261245574026565877760]