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”).

A103444 as a simple table

na(n)
01
11
21
31
42
51
61
72
82
91
101
112
124
132
141
151
162
174
184
192
201
211
224
234
244
254
264
271
281
292
304
314
324
334
342
351
361
372
384
394
408
414
424
432
441
451
462
474
488
498
508
518
524
532
541
551
564
574
588
5916
608
6116
628
634
644
651
661
672
684
698
7016
7116
7216
7316
748
754
762
771
781
794
808
818
828
838
8416
858
868
878
888
894
901
911
922
938
948
958
968
9716
9816
998
1008

[1,1,1,1,2,1,1,2,2,1,1,2,4,2,1,1,2,4,4,2,1,1,4,4,
 4,4,4,1,1,2,4,4,4,4,2,1,1,2,4,4,8,4,4,2,1,1,2,4,8,
 8,8,8,4,2,1,1,4,4,8,16,8,16,8,4,4,1,1,2,4,8,16,16,
 16,16,8,4,2,1,1,4,8,8,8,8,16,8,8,8,8,4,1,1,2,8,8,
 8,8,16,16,8,8]