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A099590 as a simple table

n a(n)
1 0
2 4
3 14
4 32
5 77
6 192
7 452
8 1024
9 2299
10 5120
11 11270
12 24576
13 53241
14 114688
15 245768
16 524288
17 1114103
18 2359296
19 4980746
20 10485760
21 22020085
22 46137344
23 96469004
24 201326592
25 419430387
26 872415232
27 1811939342
28 3758096384
29 7784628209

[0,4,14,32,77,192,452,1024,2299,5120,11270,24576,
 53241,114688,245768,524288,1114103,2359296,
 4980746,10485760,22020085,46137344,96469004,
 201326592,419430387,872415232,1811939342,
 3758096384,7784628209]

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Last modified January 18 01:05 EST 2020. Contains 330995 sequences. (Running on oeis4.)