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A039919 as a simple table

na(n)
10
21
35
421
586
6355
71488
86335
927352
10119547
11528045
122353791
1310575810
1447849685
15217824285
16996999525
174585548680
1821182609875
1998236853415
20457211008415
212134851575050
229997848660345
2346949087361550
24221022160284101
251042916456739696
264931673470809525
2723367060132453323

[0,1,5,21,86,355,1488,6335,27352,119547,528045,
 2353791,10575810,47849685,217824285,996999525,
 4585548680,21182609875,98236853415,457211008415,
 2134851575050,9997848660345,46949087361550,
 221022160284101,1042916456739696,4931673470809525,
 23367060132453323]