A098335 - OEIS

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A098335 as a simple table

n	a(n)
0	1
1	2
2	2
3	-4
4	-26
5	-68
6	-76
7	184
8	1222
9	3308
10	3772
11	-9656
12	-64676
13	-177448
14	-203992
15	536176
16	3607622
17	9968972
18	11510636
19	-30723416
20	-207302156
21	-575382392
22	-666187432
23	1796105744
24	12142184476
25	33803271032

[1,2,2,-4,-26,-68,-76,184,1222,3308,3772,-9656, -64676,-177448,-203992,536176,3607622,9968972, 11510636,-30723416,-207302156,-575382392, -666187432,1796105744,12142184476,33803271032]