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A006720 as a simple table

n a(n)
0 1
1 1
2 1
3 1
4 2
5 3
6 7
7 23
8 59
9 314
10 1529
11 8209
12 83313
13 620297
14 7869898
15 126742987
16 1687054711
17 47301104551
18 1123424582771
19 32606721084786
20 1662315215971057
21 61958046554226593
22 4257998884448335457
23 334806306946199122193
24 23385756731869683322514
25 3416372868727801226636179

[1,1,1,1,2,3,7,23,59,314,1529,8209,83313,620297,
 7869898,126742987,1687054711,47301104551,
 1123424582771,32606721084786,1662315215971057,
 61958046554226593,4257998884448335457,
 334806306946199122193,23385756731869683322514,
 3416372868727801226636179]

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Last modified April 24 07:54 EDT 2024. Contains 371922 sequences. (Running on oeis4.)