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A337870 as a simple table

n a(n)
0 1
1 2
2 16
3 166
4 1934
5 24076
6 312906
7 4191822
8 57433950
9 800740450
10 11319707546
11 161841539812
12 2335765140994
13 33979681977530
14 497696233487200
15 7332776490675630
16 108595186409772174
17 1615573668169487898
18 24132221328987714066

[1,2,16,166,1934,24076,312906,4191822,57433950,
 800740450,11319707546,161841539812,2335765140994,
 33979681977530,497696233487200,7332776490675630,
 108595186409772174,1615573668169487898,
 24132221328987714066]

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Last modified November 30 22:59 EST 2021. Contains 349426 sequences. (Running on oeis4.)