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A081712 as a simple table

n a(n)
1 4
2 6
3 7
4 8
5 10
6 20
7 21
8 26
9 101
10 119
11 172
12 409
13 621
14 1043
15 1204
16 1283
17 1673
18 2003
19 4336
20 5773
21 12913
22 13517 

[4,6,7,8,10,20,21,26,101,119,172,409,621,1043,
 1204,1283,1673,2003,4336,5773,12913,13517]

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Last modified April 25 01:35 EDT 2024. Contains 371964 sequences. (Running on oeis4.)