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A000632 as a simple table

na(n)
21
32
44
59
620
745
8105
9249
10599
111463
123614
139016
1422695
1557564
16146985
17377555
18974924
192529308
206589734
2117234114
2245228343
23119069228
24314368027
25832193902
262208347917
275873364623
2815653499416
2941800070483
30111821751649

[1,2,4,9,20,45,105,249,599,1463,3614,9016,22695,
 57564,146985,377555,974924,2529308,6589734,
 17234114,45228343,119069228,314368027,832193902,
 2208347917,5873364623,15653499416,41800070483,
 111821751649]