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A082988 as a simple table

n a(n)
0 0
1 4
2 20
3 148
4 916
5 6036
6 38804
7 251796
8 1628052
9 10540948
10 68212628
11 441505684
12 2857424788
13 18493790100
14 119693957012
15 774676469652
16 5013809190804
17 32450060277652
18 210021188163476
19 1359285717096340
20 8797481879000980

[0,4,20,148,916,6036,38804,251796,1628052,
 10540948,68212628,441505684,2857424788,
 18493790100,119693957012,774676469652,
 5013809190804,32450060277652,210021188163476,
 1359285717096340,8797481879000980]

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Last modified April 23 22:36 EDT 2024. Contains 371917 sequences. (Running on oeis4.)