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A351019 as a simple table

na(n)
01
11
25
336
4480
59991
6296913
712099604
8637590728
943090005714
103550491371994
11359557627057876

[1,1,5,36,480,9991,296913,12099604,637590728,
 43090005714,3550491371994,359557627057876]