login

A317509 as a simple table

na(n)
01
1-1
21
3-1
41
51
6-3
75
8-7
99
10-7
111
129
13-23
1441
15-55
1657
17-39
18-7
1989
20-199
21313
22-391
23377
24-199
25-199
26825
27-1607
282361
29-2759
302361
31-711
32-2503
337225
34-12743
3517465
36-18887
3713881
38569
39-26055
4060985
41-98759
42126521

[1,-1,1,-1,1,1,-3,5,-7,9,-7,1,9,-23,41,-55,57,-39,
 -7,89,-199,313,-391,377,-199,-199,825,-1607,2361,
 -2759,2361,-711,-2503,7225,-12743,17465,-18887,
 13881,569,-26055,60985,-98759,126521]