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A331616 as a simple table

na(n)
01
11
23
312
461
5380
62783
723240
8217817
92267472
1025924827
11322257408
124325450325
1362374428480
14961296291447
1515754664717184
16273537984529713
175016337928401152
1896871316157146163
191964030207217042432
2041706446669511523821
21925774982414999202816

[1,1,3,12,61,380,2783,23240,217817,2267472,
 25924827,322257408,4325450325,62374428480,
 961296291447,15754664717184,273537984529713,
 5016337928401152,96871316157146163,
 1964030207217042432,41706446669511523821,
 925774982414999202816]