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A229727 as a simple table

n a(n)
0 2
1 20
2 256
3 4832
4 42496
5 1467392
6 62836736
7 42790912
8 2535587840
9 170851041280
10 3070050172928
11 256460544016384
12 4697678227177472
13 52001663422038016
14 5598478396465086464
15 647670579588837146624
16 2427980359983876276224
17 9138219784535816536064
18 1277040945143933271277568

[2,20,256,4832,42496,1467392,62836736,42790912,
 2535587840,170851041280,3070050172928,
 256460544016384,4697678227177472,
 52001663422038016,5598478396465086464,
 647670579588837146624,2427980359983876276224,
 9138219784535816536064,1277040945143933271277568]

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Last modified March 20 21:07 EDT 2023. Contains 361391 sequences. (Running on oeis4.)