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”).

A343747 as a simple table

na(n)
10
20
30
40
50
60
70
80
90
102
111
12-1
13-1
141
152
161
17-1
18-1
191
202
212
223
233
242
252
260
27-2
28-2
29-3
30-2
31-2
320
330
342
352
362
372
381
39-1
40-2
41-2
42-3
43-3
44-1
45-1
46-1
47-3
48-4
49-4
50-3
51-1
52-1
53-1
54-1
551
562
572
583
593
603
613
622
632
640
65-2
66-2
67-4
68-4
69-3
70-3
71-2
720
730
740
752
763
774
784
792
800
81-2
82-2
83-3
84-3
85-1
860

[0,0,0,0,0,0,0,0,0,2,1,-1,-1,1,2,1,-1,-1,1,2,2,3,
 3,2,2,0,-2,-2,-3,-2,-2,0,0,2,2,2,2,1,-1,-2,-2,-3,
 -3,-1,-1,-1,-3,-4,-4,-3,-1,-1,-1,-1,1,2,2,3,3,3,3,
 2,2,0,-2,-2,-4,-4,-3,-3,-2,0,0,0,2,3,4,4,2,0,-2,
 -2,-3,-3,-1,0]