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A294314 as a simple table

na(n)
00
11
21
35
40
564
6-245
72757
8-23576
9272256
10-3270977
1145055845
12-671589952
1310984688636
14-193875825117
153688182769117
16-75085512079184
171630385857436224
18-37596306847103457
19917765946045581357
20-23641953753495247624
21640958728426947233468
22-18242640219843554954221

[0,1,1,5,0,64,-245,2757,-23576,272256,-3270977,
 45055845,-671589952,10984688636,-193875825117,
 3688182769117,-75085512079184,1630385857436224,
 -37596306847103457,917765946045581357,
 -23641953753495247624,640958728426947233468,
 -18242640219843554954221]