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A183124 as a simple table

n a(n)
0 0
1 1
2 3
3 7
4 19
5 53
6 153
7 451
8 1339
9 4001
10 11981
11 35919
12 107727
13 323149
14 969409
15 2908187
16 8724515
17 26173497
18 78520437
19 235561255
20 706683703 

[0,1,3,7,19,53,153,451,1339,4001,11981,35919,
 107727,323149,969409,2908187,8724515,26173497,
 78520437,235561255,706683703]

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Last modified May 21 00:14 EDT 2024. Contains 372720 sequences. (Running on oeis4.)