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A006658 as a simple table

na(n)
35
456
5580
65894
760312
8624240
96540510
1069323910
11742518832
128028001566
1387526544560
14961412790002
1510630964761766
16118257400015312
171322564193698320
1814863191405246888
19167771227744292160
201901345329566422790

[5,56,580,5894,60312,624240,6540510,69323910,
 742518832,8028001566,87526544560,961412790002,
 10630964761766,118257400015312,1322564193698320,
 14863191405246888,167771227744292160,
 1901345329566422790]