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A072663
as a simple table
n
a(n)
1
2
2
26
3
28
4
76
5
210
6
1801
7
3508
8
16180
9
29286
10
33988
11
1161208
12
4010473
13
164048770
14
18294479654
[2,26,28,76,210,1801,3508,16180,29286,33988, 1161208,4010473,164048770,18294479654]
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Last modified August 14 23:14 EDT 2024. Contains 375171 sequences. (Running on oeis4.)