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A116456 as a simple table

na(n)
01
12
28
340
4228
51424
69520
767064
8492292
93735112
1029114128
11232077344
121885195276
1315562235264
14130263211680
151103650297320
169450760284100
1781696139565864
18712188311673280
196255662512111248
2055324571848957688
21492328039660580784
224406003100524940624
2339635193868649858744
24358245485706959890508

[1,2,8,40,228,1424,9520,67064,492292,3735112,
 29114128,232077344,1885195276,15562235264,
 130263211680,1103650297320,9450760284100,
 81696139565864,712188311673280,6255662512111248,
 55324571848957688,492328039660580784,
 4406003100524940624,39635193868649858744,
 358245485706959890508]