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A364658 as a simple table

na(n)
01
12
2-1
34
4-7
514
6-91
7208
8-494
910868
10-27170
1169160
12-535990
131401820
14-3704810
1529638480
16-79653415
17215532770
18-5280552865
1914452039420
20-39743108405
21329300041070
22-913059204785
232540686482880
24-21278249294120
2559579098023536
26-167279775219928
2712713262916714528

[1,2,-1,4,-7,14,-91,208,-494,10868,-27170,69160,
 -535990,1401820,-3704810,29638480,-79653415,
 215532770,-5280552865,14452039420,-39743108405,
 329300041070,-913059204785,2540686482880,
 -21278249294120,59579098023536,-167279775219928,
 12713262916714528]