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A191683 as a simple table

n a(n)
1 21
2 33
3 57
4 69
5 93
6 105
7 129
8 177
9 195
10 213
11 217
12 237
13 249
14 265
15 309
16 393
17 417
18 445
19 465
20 483
21 489
22 565
23 573
24 597
25 633
26 645
27 669
28 753
29 813
30 865
31 915
32 933
33 973
34 987
35 993
36 1057
37 1077
38 1137
39 1149
40 1185
41 1257
42 1285
43 1329
44 1365
45 1389
46 1393
47 1417
48 1437
49 1465
50 1477
51 1497
52 1545
53 1569
54 1689
55 1743
56 1765
57 1857
58 1893
59 1897
60 1945
61 1977

[21,33,57,69,93,105,129,177,195,213,217,237,249,
 265,309,393,417,445,465,483,489,565,573,597,633,
 645,669,753,813,865,915,933,973,987,993,1057,1077,
 1137,1149,1185,1257,1285,1329,1365,1389,1393,1417,
 1437,1465,1477,1497,1545,1569,1689,1743,1765,1857,
 1893,1897,1945,1977]

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Last modified September 21 11:18 EDT 2019. Contains 327253 sequences. (Running on oeis4.)