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A129284 as a simple table

n a(n)
0 2
1 3
2 4
3 8
4 20
5 44
6 92
7 188
8 380
9 856
10 2148
11 5024
12 17616
13 58768
14 176320
15 755904
16 3305920
17 13885184
18 69634816
19 348174336
20 2385273856
21 14652403712
22 102566830080
23 849285738496
24 6035962949632
25 44017806979072
26 308166534991872
27 2380768960708608
28 23410894780694528

[2,3,4,8,20,44,92,188,380,856,2148,5024,17616,
 58768,176320,755904,3305920,13885184,69634816,
 348174336,2385273856,14652403712,102566830080,
 849285738496,6035962949632,44017806979072,
 308166534991872,2380768960708608,
 23410894780694528]

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Last modified June 1 05:22 EDT 2024. Contains 373010 sequences. (Running on oeis4.)