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A316208 as a simple table

na(n)
164
21709
313454
4139490
51494780
616731864
7189577494
82170853960
924994758941
10288650317449
113339396914117
1238670537363103
13448048281271559
145192799004809572
1560193696372468135
16697817225826066604

[64,1709,13454,139490,1494780,16731864,189577494,
 2170853960,24994758941,288650317449,3339396914117,
 38670537363103,448048281271559,5192799004809572,
 60193696372468135,697817225826066604]