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”).

A138798 as a simple table

na(n)
21
32
43
51
65
72
87
91
109
114
122
135
141
153
1615
177
182
198
201
215
223
2310
246
252
264
271
2827
2913
303
3114
3231
332
346
351
3610
3717
387
393
405
4119
422
4320
441
454
469
4722
4814
493
507
515
522
5325
541
558
564
576
5812
5928
603
6129
6213
632
6463
651
6614
6732
684
698
706
7134
723
7335
7416
752
765
771
7817
7938
8013
814
8218
8340
846
853
8619
8711
882
8943
901

[1,2,3,1,5,2,7,1,9,4,2,5,1,3,15,7,2,8,1,5,3,10,6,
 2,4,1,27,13,3,14,31,2,6,1,10,17,7,3,5,19,2,20,1,4,
 9,22,14,3,7,5,2,25,1,8,4,6,12,28,3,29,13,2,63,1,
 14,32,4,8,6,34,3,35,16,2,5,1,17,38,13,4,18,40,6,3,
 19,11,2,43,1]