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A125331 as a simple table

n a(n)
0 1
1 21
2 135
3 693
4 4159
5 25291
6 157635
7 995659
8 6357119
9 40921479
10 265145505
11 1727138841
12 11300204035
13 74208972755
14 488874737353
15 3229363648333
16 21382430152111
17 141869013922279
18 942972599847861
19 6277675948529895

[1,21,135,693,4159,25291,157635,995659,6357119,
 40921479,265145505,1727138841,11300204035,
 74208972755,488874737353,3229363648333,
 21382430152111,141869013922279,942972599847861,
 6277675948529895]

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Last modified April 25 07:41 EDT 2024. Contains 371964 sequences. (Running on oeis4.)