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”).

A278718 as a simple table

na(n)
00
11
21
31
40
5-1
60
71
81
91
100
11-1
120
131
141
151
160
17-1
180
191
201
211
220
23-1
240
251
261
271
280
29-1
300
311
321
331
340
35-1
360
371
381
391
400
41-1
420
431
441
451
460
47-1
480
491
501
511
520
53-1
540
551
561
571
580
59-1
600
611
621
631
640
65-1
660
671
681
691
700
71-1
720
731
741
751
760
77-1
780
791
801
811
820
83-1
840
851
861
871
880
89-1
900
911
921
931
940
95-1
960
971
981
991
1000

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