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A154235 as a simple table

na(n)
11
28
354
4352
52276
614688
794744
8611072
93941136
1025418368
11163935584
121057300992
136819052096
1443979406848
15283644733824
161829363802112
1711798463078656
1876094066608128
19490767902078464
203165202550546432

[1,8,54,352,2276,14688,94744,611072,3941136,
 25418368,163935584,1057300992,6819052096,
 43979406848,283644733824,1829363802112,
 11798463078656,76094066608128,490767902078464,
 3165202550546432]