A154991 - OEIS

A154991 as a simple table

n	a(n)
1	2
2	1
3	1
4	17
5	-30
6	17
7	16
8	-10
9	-10
10	16
11	72
12	-176
13	256
14	-176
15	72
16	99
17	-57
18	78
19	78
20	-57
21	99
22	275
23	-282
24	1557
25	-1660
26	1557
27	-282
28	275
29	466
30	1180
31	2904
32	490
33	490
34	2904
35	1180
36	466
37	1058
38	5244
39	21704
40	4580
41	15468
42	4580
43	21704
44	5244
45	1058

[2,1,1,17,-30,17,16,-10,-10,16,72,-176,256,-176, 72,99,-57,78,78,-57,99,275,-282,1557,-1660,1557, -282,275,466,1180,2904,490,490,2904,1180,466,1058, 5244,21704,4580,15468,4580,21704,5244,1058]