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A136794 as a simple table

n a(n)
1 2
2 8
3 52
4 376
5 2998
6 25256
7 222128
8 2013680
9 18691522
10 176743160
11 1696546848
12 16488151400
13 161919802562
14 1604274741608
15 16016845623764
16 160977882238968
17 1627406260427490
18 16537733701226936

[2,8,52,376,2998,25256,222128,2013680,18691522,
 176743160,1696546848,16488151400,161919802562,
 1604274741608,16016845623764,160977882238968,
 1627406260427490,16537733701226936]

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Last modified January 28 22:40 EST 2020. Contains 331328 sequences. (Running on oeis4.)