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A207819 as a simple table

n a(n)
0 0
1 1
2 1
3 6
4 20
5 106
6 618
7 4358
8 34836
9 313592
10 3135988
11 34498646
12 414007634
13 5382362086
14 75356174332
15 1130382058576
16 18086649408624
17 307480839465174
18 5534775895914982
19 105162728081809146
20 2103289132221173216
21 44169707042511725964
22 971745847021319655464
23 22350404337704558809666

[0,1,1,6,20,106,618,4358,34836,313592,3135988,
 34498646,414007634,5382362086,75356174332,
 1130382058576,18086649408624,307480839465174,
 5534775895914982,105162728081809146,
 2103289132221173216,44169707042511725964,
 971745847021319655464,22350404337704558809666]

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Last modified May 22 21:38 EDT 2024. Contains 372758 sequences. (Running on oeis4.)