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”).

A097343 as a simple table

na(n)
21
3-1
40
51
6-1
7-1
81
90
101
111
12-1
131
14-1
15-1
160
171
18-1
191
201
211
22-1
23-1
24-1
251
26-1
270
281
29-1
301
311
32-1
33-1
34-1
35-1
361
371
38-1
391
400
411
421
43-1
441
45-1
46-1
47-1
481
491
50-1
51-1
52-1
531
54-1
551
561
570
581
59-1
60-1
611
621
631
641
65-1
661
67-1
681
69-1
70-1
71-1
72-1
731
741
75-1
760
771
781
791
801
81-1
821
83-1
841
851
86-1
87-1
881
891
90-1
91-1
921
93-1
941
95-1
96-1
97-1
98-1
990
1001
101-1
102-1
1031
1041
1051
1061

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