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”).

A248346 as a simple table

na(n)
12
23
37
423
531
647
771
879
9103
10127
11151
12199
13223
14271
15367
16431
17463
18487
19503
20727
21751
22823
23967
241087
251303
261319
271423
281439
291559
301607
311759
321823
331879
341951
351999
362039
372143
383343
393527
403623
413967
424447
434943
445167
455503
465591
475791
486199
496343

[2,3,7,23,31,47,71,79,103,127,151,199,223,271,367,
 431,463,487,503,727,751,823,967,1087,1303,1319,
 1423,1439,1559,1607,1759,1823,1879,1951,1999,2039,
 2143,3343,3527,3623,3967,4447,4943,5167,5503,5591,
 5791,6199,6343]