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A320971 as a simple table

na(n)
01
1-2
2-4
32
410
522
6-4
7-26
8-68
9-104
10-12
11110
12378
13486
14448
15-66
16-1130
17-2242
18-3044
19-2474
20-322
215106
2211064
2316954
2417896
2510440
26-8032
27-40132
28-74578
29-105754
30-108564
31-66534
3242672
33209858
34421352
35611946
36690204
37553534
3882112
39-735082
40-1892200

[1,-2,-4,2,10,22,-4,-26,-68,-104,-12,110,378,486,
 448,-66,-1130,-2242,-3044,-2474,-322,5106,11064,
 16954,17896,10440,-8032,-40132,-74578,-105754,
 -108564,-66534,42672,209858,421352,611946,690204,
 553534,82112,-735082,-1892200]