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A280157 as a simple table

n a(n)
1 2
2 18
3 94
4 424
5 1854
6 7628
7 30874
8 123312
9 488256
10 1920790
11 7513678
12 29249892
13 113386708
14 437908264
15 1685639238
16 6469357240
17 24762845248
18 94557090250
19 360277506538
20 1369975634630
21 5199885300498
22 19703519987286
23 74545164231536

[2,18,94,424,1854,7628,30874,123312,488256,
 1920790,7513678,29249892,113386708,437908264,
 1685639238,6469357240,24762845248,94557090250,
 360277506538,1369975634630,5199885300498,
 19703519987286,74545164231536]

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Last modified April 24 04:14 EDT 2024. Contains 371918 sequences. (Running on oeis4.)