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”).

A215532 as a simple table

na(n)
00
11
20
31
40
51
60
70
81
90
101
110
121
130
141
150
160
171
180
191
200
211
220
231
240
251
260
271
280
290
301
310
321
330
341
350
360
370
381
390
401
410
421
430
440
451
460
471
480
491
500
511
520
530
541
550
560
571
580
591
600
611
620
630
641
650
661
670
681
690
701
710
721
730
740
751
760
771
780
790
801
810
821
830
841
850
860

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