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”).

A181434 as a simple table

na(n)
11
2-3
3-1
40
5-1
61
7-1
80
90
101
11-1
120
13-1
141
151
160
17-1
180
19-1
200
211
221
23-1
240
250
261
270
280
29-1
30-1
31-1
320
331
341
351
360
37-1
381
391
400
41-1
42-1
43-1
440
450
461
47-1
480
490
500
511
520
53-1
540
551
560
571
581
59-1
600
61-1
621
630
640
651
66-1
67-1
680
691
70-1
71-1
720
73-1
741
750
760
771

[1,-3,-1,0,-1,1,-1,0,0,1,-1,0,-1,1,1,0,-1,0,-1,0,
 1,1,-1,0,0,1,0,0,-1,-1,-1,0,1,1,1,0,-1,1,1,0,-1,
 -1,-1,0,0,1,-1,0,0,0,1,0,-1,0,1,0,1,1,-1,0,-1,1,0,
 0,1,-1,-1,0,1,-1,-1,0,-1,1,0,0,1]