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”).

A131212 as a simple table

na(n)
12
26
37
42
54
69
72
87
99
102
116
127
134
146
1511
166
177
1811
192
206
217
222
237
249
256
267
2711
282
296
307
312
324
339
342
357
369
372
384
399
404
416
4211
434
449
4511
462
474
489
492
507
519
524
539
5411
552
566
577
582
594
609
612
627
639
642
656
667
672
687
699
706
717
7211
732
744
759
762
777
789
794
809
8111
822
836
847
852
864
879
882
897
909
912
926
937
944
956
9611
976
987
9911
1002
1016

[2,6,7,2,4,9,2,7,9,2,6,7,4,6,11,6,7,11,2,6,7,2,7,
 9,6,7,11,2,6,7,2,4,9,2,7,9,2,4,9,4,6,11,4,9,11,2,
 4,9,2,7,9,4,9,11,2,6,7,2,4,9,2,7,9,2,6,7,2,7,9,6,
 7,11,2,4,9,2,7,9,4,9,11,2,6,7,2,4,9,2,7,9,2,6,7,4,
 6,11,6,7,11,2,6]