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A045654 as a simple table

na(n)
01
12
26
38
422
532
672
7128
8278
9512
101056
112048
124168
138192
1416512
1532768
1665814
17131072
18262656
19524288
201049632
212097152
224196352
238388608
2416781384
2533554432
2667117056
27134217728
28268451968
29536870912
301073774592
312147483648

[1,2,6,8,22,32,72,128,278,512,1056,2048,4168,8192,
 16512,32768,65814,131072,262656,524288,1049632,
 2097152,4196352,8388608,16781384,33554432,
 67117056,134217728,268451968,536870912,1073774592,
 2147483648]