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A207718 as a simple table

n a(n)
1 6
2 36
3 114
4 450
5 1644
6 6186
7 23010
8 85992
9 320742
10 1197318
11 4467984
12 16675494
13 62232582
14 232257108
15 866792178
16 3234917538
17 12072868380
18 45056571498
19 168153392514
20 627557039160
21 2342074698438
22 8740741860870
23 32620892573088

[6,36,114,450,1644,6186,23010,85992,320742,
 1197318,4467984,16675494,62232582,232257108,
 866792178,3234917538,12072868380,45056571498,
 168153392514,627557039160,2342074698438,
 8740741860870,32620892573088]

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Last modified April 18 18:58 EDT 2024. Contains 371781 sequences. (Running on oeis4.)