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A247680 as a simple table

n a(n)
0 1
1 1
2 3
3 5
4 21
5 82
6 249
7 688
8 1879
9 5690
10 17932
11 55271
12 164427
13 485348
14 1451110
15 4395114
16 13313135
17 40073992
18 120200822
19 360897368
20 1086543152
21 3274191643
22 9858847241
23 29657925485
24 89206237151
25 268435863317
26 808022052324
27 2432169981689
28 7319562671432

[1,1,3,5,21,82,249,688,1879,5690,17932,55271,
 164427,485348,1451110,4395114,13313135,40073992,
 120200822,360897368,1086543152,3274191643,
 9858847241,29657925485,89206237151,268435863317,
 808022052324,2432169981689,7319562671432]

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Last modified April 25 01:35 EDT 2024. Contains 371964 sequences. (Running on oeis4.)