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A117887 as a simple table

na(n)
11
24
320
4145
51441
618248
7280392
85063361
9105063361
102463011052
1164380375276
121856540769313
1358550453144609
142004745521503984
1574062339559431920
162936485391069247713
17124376016487663499489
185604762874272465685428

[1,4,20,145,1441,18248,280392,5063361,105063361,
 2463011052,64380375276,1856540769313,
 58550453144609,2004745521503984,74062339559431920,
 2936485391069247713,124376016487663499489,
 5604762874272465685428]