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”).

A075580 as a simple table

na(n)
02
13
25
37
413
519
631
753
873
989
10359
11139
12401
13181
14113
15211
16293
17661
18863
19773
20523
211933
221831
231069
241381
25887
261637
271129
281669
291951
304027
313469
324177
336397
342477
352971
365531
371327
384297
394831
405351
415591
429973
4311743
4413187
458467
4627851
4718803

[2,3,5,7,13,19,31,53,73,89,359,139,401,181,113,
 211,293,661,863,773,523,1933,1831,1069,1381,887,
 1637,1129,1669,1951,4027,3469,4177,6397,2477,2971,
 5531,1327,4297,4831,5351,5591,9973,11743,13187,
 8467,27851,18803]