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”).

A333868 as a simple table

na(n)
21
33
43
54
65
74
83
96
107
114
124
134
145
159
164
174
185
195
207
219
224
234
244
256
264
277
287
294
307
315
323
336
346
3511
369
374
384
396
404
414
426
434
445
4511
465
474
484
496
506
516
525
534
547
5512
568
576
584
594
606
614
624
638
645
658
669
674
684
697
708
714
725
734
745
758
764
778
789
794
805
818
824
836
8410
857
864
876

[1,3,3,4,5,4,3,6,7,4,4,4,5,9,4,4,5,5,7,9,4,4,4,6,
 4,7,7,4,7,5,3,6,6,11,9,4,4,6,4,4,6,4,5,11,5,4,4,6,
 6,6,5,4,7,12,8,6,4,4,6,4,4,8,5,8,9,4,4,7,8,4,5,4,
 5,8,4,8,9,4,5,8,4,6,10,7,4,6]