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A173960 as a simple table

n a(n)
1 21
2 41
3 69
4 105
5 149
6 201
7 261
8 329
9 405
10 489
11 581
12 681
13 789
14 905
15 1029
16 1161
17 1301
18 1449
19 1605
20 1769
21 1941
22 2121
23 2309
24 2505
25 2709
26 2921
27 3141
28 3369
29 3605
30 3849
31 4101
32 4361
33 4629
34 4905
35 5189
36 5481
37 5781
38 6089
39 6405
40 6729
41 7061
42 7401
43 7749
44 8105
45 8469

[21,41,69,105,149,201,261,329,405,489,581,681,789,
 905,1029,1161,1301,1449,1605,1769,1941,2121,2309,
 2505,2709,2921,3141,3369,3605,3849,4101,4361,4629,
 4905,5189,5481,5781,6089,6405,6729,7061,7401,7749,
 8105,8469]

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Last modified November 22 18:55 EST 2019. Contains 329410 sequences. (Running on oeis4.)