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A068682 as a simple table

n a(n)
1 3
2 7
3 17
4 31
5 49
6 57
7 111
8 169
9 269
10 363
11 389
12 393
13 637
14 643
15 671
16 697
17 787
18 851
19 853
20 927
21 1033
22 1087
23 1089
24 1151
25 1153
26 1173
27 1217
28 1219
29 1233
30 1261
31 1331
32 1479
33 1671
34 1761
35 1767
36 1837
37 1841
38 1859
39 1921
40 2011
41 2147
42 2149
43 2283
44 2311
45 2353
46 2377
47 2409

[3,7,17,31,49,57,111,169,269,363,389,393,637,643,
 671,697,787,851,853,927,1033,1087,1089,1151,1153,
 1173,1217,1219,1233,1261,1331,1479,1671,1761,1767,
 1837,1841,1859,1921,2011,2147,2149,2283,2311,2353,
 2377,2409]

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Last modified May 6 17:48 EDT 2024. Contains 372297 sequences. (Running on oeis4.)