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A102881 as a simple table

n a(n)
0 1
1 1
2 2
3 6
4 12
5 32
6 80
7 200
8 520
9 1336
10 3472
11 9072
12 23744
13 62432
14 164544
15 434688
16 1150944
17 3052768
18 8110784
19 21581120
20 57498496
21 153378048
22 409583616
23 1094848768
24 2929288960
25 7843943680
26 21020501504
27 56371941888
28 151276652544

[1,1,2,6,12,32,80,200,520,1336,3472,9072,23744,
 62432,164544,434688,1150944,3052768,8110784,
 21581120,57498496,153378048,409583616,1094848768,
 2929288960,7843943680,21020501504,56371941888,
 151276652544]

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Last modified July 29 18:21 EDT 2024. Contains 374734 sequences. (Running on oeis4.)