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A054257 as a simple table

n a(n)
0 21
1 117
2 241
3 283
4 389
5 517
6 547
7 627
8 1219
9 1223
10 1247
11 1285
12 1287
13 1323
14 1467
15 1505
16 1591
17 1599
18 1689
19 1713
20 1817
21 1961
22 2203
23 2309
24 2377
25 2607
26 2837
27 2847
28 2899
29 2911
30 3227
31 3261
32 3499
33 3823
34 4007
35 4069
36 4183
37 4347
38 4403
39 4473
40 4507
41 4535
42 4637

[21,117,241,283,389,517,547,627,1219,1223,1247,
 1285,1287,1323,1467,1505,1591,1599,1689,1713,1817,
 1961,2203,2309,2377,2607,2837,2847,2899,2911,3227,
 3261,3499,3823,4007,4069,4183,4347,4403,4473,4507,
 4535,4637]

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Last modified January 20 03:32 EST 2019. Contains 319323 sequences. (Running on oeis4.)