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A022018 as a simple table

n a(n)
0 2
1 16
2 129
3 1040
4 8385
5 67604
6 545057
7 4394520
8 35430801
9 285660700
10 2303138321
11 18569044064
12 149712848033
13 1207059275044
14 9731910872129
15 78463494859944
16 632611632651505
17 5100428912583468
18 41122188953879473
19 331547494013013232
20 2673100425407651457

[2,16,129,1040,8385,67604,545057,4394520,35430801,
 285660700,2303138321,18569044064,149712848033,
 1207059275044,9731910872129,78463494859944,
 632611632651505,5100428912583468,
 41122188953879473,331547494013013232,
 2673100425407651457]

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Last modified August 24 16:05 EDT 2019. Contains 326295 sequences. (Running on oeis4.)