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”).

A075437 as a simple table

na(n)
01
11
21
30
41
51
61
70
80
91
101
110
121
130
140
150
161
171
181
191
201
210
220
230
240
251
261
270
280
290
301
310
320
330
340
350
361
371
381
390
400
411
421
430
440
450
460
470
480
491
501
510
521
530
541
551
561
570
580
590
600
610
620
630
641
651
661
671
681
691
701
710
721
730
740
750
760
770
780
790
800
811
821
830
840
850
860
870
881
891
901
910
920
930
940
950
960
970
980
990
1001
1011

[1,1,1,0,1,1,1,0,0,1,1,0,1,0,0,0,1,1,1,1,1,0,0,0,
 0,1,1,0,0,0,1,0,0,0,0,0,1,1,1,0,0,1,1,0,0,0,0,0,0,
 1,1,0,1,0,1,1,1,0,0,0,0,0,0,0,1,1,1,1,1,1,1,0,1,0,
 0,0,0,0,0,0,0,1,1,0,0,0,0,0,1,1,1,0,0,0,0,0,0,0,0,
 0,1,1]