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”).

A153488 as a simple table

na(n)
12
23
37
45
523
6117
77
847
9335
102369
1111
12119
131323
1414609
15160923
1613
17167
182189
1928529
20371165
214826297
2217
23287
244905
2583489
261419729
2724137057
28410336625
2919
30359
316851
32130289
332475971
3447045369
35893869691
3616983554849
3723
38527
3912159
40279809
416436215
42148035377
433404823399
4478310977089
451801152628695

[2,3,7,5,23,117,7,47,335,2369,11,119,1323,14609,
 160923,13,167,2189,28529,371165,4826297,17,287,
 4905,83489,1419729,24137057,410336625,19,359,6851,
 130289,2475971,47045369,893869691,16983554849,23,
 527,12159,279809,6436215,148035377,3404823399,
 78310977089,1801152628695]