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A074569 as a simple table

n a(n)
0 3
1 20
2 146
3 1136
4 9218
5 76880
6 653186
7 5622896
8 48877058
9 428036240
10 3770308226
11 33362580656
12 296287600898
13 2638821947600
14 23555283963266
15 210639767346416
16 1886257414388738
17 16909829393522960
18 151723117614386306

[3,20,146,1136,9218,76880,653186,5622896,48877058,
 428036240,3770308226,33362580656,296287600898,
 2638821947600,23555283963266,210639767346416,
 1886257414388738,16909829393522960,
 151723117614386306]

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Last modified May 30 04:38 EDT 2020. Contains 334711 sequences. (Running on oeis4.)