login

Year-end appeal: Please make a donation to the OEIS Foundation to support ongoing development and maintenance of the OEIS. We are now in our 61st year, we have over 378,000 sequences, and we’ve reached 11,000 citations (which often say “discovered thanks to the OEIS”).

A254678 as a simple table

na(n)
17
217
323
431
541
647
773
889
997
10103
11127
12137
13151
14167
15199
16223
17233
18239
19241
20257
21271
22281
23311
24313
25353
26359
27367
28383
29409
30431
31433
32439
33449
34479
35487
36503
37521
38577
39593
40601
41607
42647
43673
44719
45727
46743
47751
48761
49769
50839
51857
52881
53887
54911
55929
56937
57953
58967
59977
60983

[7,17,23,31,41,47,73,89,97,103,127,137,151,167,
 199,223,233,239,241,257,271,281,311,313,353,359,
 367,383,409,431,433,439,449,479,487,503,521,577,
 593,601,607,647,673,719,727,743,751,761,769,839,
 857,881,887,911,929,937,953,967,977,983]