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A087131 as a simple table

n a(n)
0 2
1 2
2 12
3 32
4 112
5 352
6 1152
7 3712
8 12032
9 38912
10 125952
11 407552
12 1318912
13 4268032
14 13811712
15 44695552
16 144637952
17 468058112
18 1514668032
19 4901568512
20 15861809152
21 51329892352
22 166107021312
23 537533612032
24 1739495309312

[2,2,12,32,112,352,1152,3712,12032,38912,125952,
 407552,1318912,4268032,13811712,44695552,
 144637952,468058112,1514668032,4901568512,
 15861809152,51329892352,166107021312,537533612032,
 1739495309312]

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Last modified September 29 12:15 EDT 2020. Contains 337431 sequences. (Running on oeis4.)