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A236501 as a simple table

na(n)
1256
22632
327458
4284408
52954930
630642966
7318132117
83300684904
934257479784
10355481488428
113689189768448
1238283796526416
13397297768359304
144122943466702820
1542786260152594116
16444015373043625472

[256,2632,27458,284408,2954930,30642966,318132117,
 3300684904,34257479784,355481488428,3689189768448,
 38283796526416,397297768359304,4122943466702820,
 42786260152594116,444015373043625472]