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A020311 as a simple table

n a(n)
1 21
2 341
3 781
4 1591
5 2201
6 3097
7 4859
8 7141
9 7613
10 8299
11 13333
12 13817
13 14689
14 17059
15 17711
16 23441
17 24211
18 24641
19 24727
20 32167
21 32581
22 37291
23 45991
24 46969
25 49321
26 58969
27 66061
28 67069
29 75851
30 77449
31 79003
32 83381
33 85457
34 94831
35 102311
36 104777
37 104833

[21,341,781,1591,2201,3097,4859,7141,7613,8299,
 13333,13817,14689,17059,17711,23441,24211,24641,
 24727,32167,32581,37291,45991,46969,49321,58969,
 66061,67069,75851,77449,79003,83381,85457,94831,
 102311,104777,104833]

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Last modified July 27 07:48 EDT 2024. Contains 374642 sequences. (Running on oeis4.)