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A020246 as a simple table

n a(n)
1 21
2 671
3 889
4 1891
5 2059
6 2761
7 5461
8 7999
9 13051
10 15311
11 16441
12 21667
13 25681
14 34861
15 37901
16 38989
17 42127
18 49771
19 50737
20 54811
21 64681
22 68251
23 78961
24 85591
25 88831
26 92509
27 93031
28 96049
29 97921
30 105001
31 109061
32 111361
33 114841
34 123713
35 143009
36 145351

[21,671,889,1891,2059,2761,5461,7999,13051,15311,
 16441,21667,25681,34861,37901,38989,42127,49771,
 50737,54811,64681,68251,78961,85591,88831,92509,
 93031,96049,97921,105001,109061,111361,114841,
 123713,143009,145351]

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Last modified September 21 21:32 EDT 2021. Contains 347605 sequences. (Running on oeis4.)