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A003426 as a simple table

na(n)
11
21
31
41
52
64
78
817
937
1085
11196
12469
131134
142799
156975
1617628
1744903
18115497
19299089
20780036
212045924
225396078
2314299878
2438067356
25101748748
26272995157
27735004112
281985356350
295378958683
3014614641597
3139813346977
32108730631236
33297641593852

[1,1,1,1,2,4,8,17,37,85,196,469,1134,2799,6975,
 17628,44903,115497,299089,780036,2045924,5396078,
 14299878,38067356,101748748,272995157,735004112,
 1985356350,5378958683,14614641597,39813346977,
 108730631236,297641593852]