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”).

A248849 as a simple table

na(n)
11
21
31
43
52
65
71
81
94
103
1120
121
134
1413
152
1611
173
18101
1912
201
2110
229
231
2411
257
2627
271
28347
2911
3073
314
327
3352
3493
351
367
3751
3873
3946
4011
418
4241
434
4451
452
465
4730
4811
4910
503
51280
5211
537
5417
5514
561
5732
5811
595
6011
6119
621
6320
6417
6522
66133
676
681

[1,1,1,3,2,5,1,1,4,3,20,1,4,13,2,11,3,101,12,1,10,
 9,1,11,7,27,1,347,11,73,4,7,52,93,1,7,51,73,46,11,
 8,41,4,51,2,5,30,11,10,3,280,11,7,17,14,1,32,11,5,
 11,19,1,20,17,22,133,6,1]