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A078944 as a simple table

n a(n)
0 1
1 4
2 20
3 116
4 756
5 5428
6 42356
7 355636
8 3188340
9 30333492
10 304716148
11 3218555700
12 35618229364
13 411717043252
14 4957730174836
15 62045057731892
16 805323357485684
17 10820999695801908
18 150271018666120564
19 2153476417340487476

[1,4,20,116,756,5428,42356,355636,3188340,
 30333492,304716148,3218555700,35618229364,
 411717043252,4957730174836,62045057731892,
 805323357485684,10820999695801908,
 150271018666120564,2153476417340487476]

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Last modified April 23 16:40 EDT 2024. Contains 371916 sequences. (Running on oeis4.)