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A276314 as a simple table

na(n)
11
21
35
420
5104
6546
73066
817655
9104555
10630773
113867617
1224020932
13150827740
14955808680
156105327912
1639268000188
17254093573088
181652984379150
1910804631902350
2070925539707330
21467373389649870
223090558380977020
2320501504119375500
24136392970090612950

[1,1,5,20,104,546,3066,17655,104555,630773,
 3867617,24020932,150827740,955808680,6105327912,
 39268000188,254093573088,1652984379150,
 10804631902350,70925539707330,467373389649870,
 3090558380977020,20501504119375500,
 136392970090612950]