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A285392 as a simple table

na(n)
01
15
236
3264
41944
514328
6105624
7778680
85740632
942321528
10312006168
112300197176
1216957700568
13125016939000
14921660044184
156794737129656
1650092713636696
17369297577174392
182722565630929176
1920071519752269880
20147972890199278808
211090897774766270712

[1,5,36,264,1944,14328,105624,778680,5740632,
 42321528,312006168,2300197176,16957700568,
 125016939000,921660044184,6794737129656,
 50092713636696,369297577174392,2722565630929176,
 20071519752269880,147972890199278808,
 1090897774766270712]