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A213764 as a simple table

na(n)
11
28
331
490
5225
6516
71123
82366
94885
109960
1120151
1240578
1381481
14163340
15327115
16654726
171310013
182620656
195242015
2010484810
2120970481
2241941908
2383884851
24167770830
25335542885
26671087096
271342175623
282684352786

[1,8,31,90,225,516,1123,2366,4885,9960,20151,
 40578,81481,163340,327115,654726,1310013,2620656,
 5242015,10484810,20970481,41941908,83884851,
 167770830,335542885,671087096,1342175623,
 2684352786]