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”).

A216513 as a simple table

na(n)
01
11
20
30
41
50
61
71
80
91
101
110
120
130
140
151
161
170
180
190
200
210
221
230
241
252
260
270
281
290
300
311
320
331
340
350
361
370
380
390
401
410
421
430
440
450
460
470
480
492
500
510
520
530
541
552
560
570
581
590
601
610
620
631
641
650
660
670
680
690
702
710
720
731
740
750
760
770
780
791
800
811
820
830
840
850
860
871
881
890
901
910
920
930
940
950
961
971
980
990

[1,1,0,0,1,0,1,1,0,1,1,0,0,0,0,1,1,0,0,0,0,0,1,0,
 1,2,0,0,1,0,0,1,0,1,0,0,1,0,0,0,1,0,1,0,0,0,0,0,0,
 2,0,0,0,0,1,2,0,0,1,0,1,0,0,1,1,0,0,0,0,0,2,0,0,1,
 0,0,0,0,0,1,0,1,0,0,0,0,0,1,1,0,1,0,0,0,0,0,1,1,0,
 0]