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A322700 as a simple table

n a(n)
0 1
1 1
2 4
3 14
4 70
5 454
6 4552
7 74168
8 2129348
9 111535148
10 10812483376
11 1945437208224
12 650378721156736
13 404749938336404704
14 470163239887698967104
15 1022592854829028311090816
16 4177826139658552046627175072
17 32163829440870460348768023969632

[1,1,4,14,70,454,4552,74168,2129348,111535148,
 10812483376,1945437208224,650378721156736,
 404749938336404704,470163239887698967104,
 1022592854829028311090816,
 4177826139658552046627175072,
 32163829440870460348768023969632]

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Last modified February 20 08:04 EST 2020. Contains 332069 sequences. (Running on oeis4.)