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”).

A023269 as a simple table

na(n)
12
27
317
419
523
637
761
867
973
10101
11103
12173
13193
14233
15359
16383
17409
18479
19541
20557
21607
22613
23719
24809
25857
26997
271013
281033
291109
301117
311237
321297
331361
341459
351531
361549
371699
381823
391871
401979
411999
422069
432131
442161
452347
462377
472399
482447
492663

[2,7,17,19,23,37,61,67,73,101,103,173,193,233,359,
 383,409,479,541,557,607,613,719,809,857,997,1013,
 1033,1109,1117,1237,1297,1361,1459,1531,1549,1699,
 1823,1871,1979,1999,2069,2131,2161,2347,2377,2399,
 2447,2663]