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”).

A158188 as a simple table

na(n)
01
11
2-1
31
4-2
51
61
7-5
85
9-1
101
11-6
1210
13-6
141
151
16-9
1725
18-25
199
20-1
211
22-12
2348
24-78
2548
26-12
271
281
29-19
30102
31-228
32228
33-102
3419
35-1
361
37-20
38121
39-330
40456
41-330
42121
43-20
441
451
46-23
47176
48-628
491167
50-1167
51628
52-176
5323
54-1
551
56-26
57239
58-1062
592532
60-3368

[1,1,-1,1,-2,1,1,-5,5,-1,1,-6,10,-6,1,1,-9,25,-25,
 9,-1,1,-12,48,-78,48,-12,1,1,-19,102,-228,228,
 -102,19,-1,1,-20,121,-330,456,-330,121,-20,1,1,
 -23,176,-628,1167,-1167,628,-176,23,-1,1,-26,239,
 -1062,2532,-3368]