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A247596 as a simple table

na(n)
31
45
535
6410
76178
8122038
92921607
1081609320
112588949454
1291699869557
133582942335285
14153048366545566
157096576775166579
16355120233277118103
1719084972486216897560
181096965038775477639368
1967192642484367187943761
204372413334294007638726854

[1,5,35,410,6178,122038,2921607,81609320,
 2588949454,91699869557,3582942335285,
 153048366545566,7096576775166579,
 355120233277118103,19084972486216897560,
 1096965038775477639368,67192642484367187943761,
 4372413334294007638726854]