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A011952 as a simple table

na(n)
42
53
68
716
840
973
10165
11320
12666
131323
142709
155364
1610880
1721675
1843577
1987040
20174590
21348787
22698709
231396736
242795400
255589672

[2,3,8,16,40,73,165,320,666,1323,2709,5364,10880,
 21675,43577,87040,174590,348787,698709,1396736,
 2795400,5589672]