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A140118 as a simple table

na(n)
13
27
39
419
53
649
7-39
8151
9-189
10381
11-371
12219
13991
14-4059
1511473
16-26193
1753791
18-100639
19175107
20-281581
21410979
22-506757
23391647
24401587
25-2962157
269621235
27-24977199
2857408111
29-120867183
30236098467
31-428880285
32719991383
33-1096219131
341442605443
35-1401210665
3699178397
374340546667

[3,7,9,19,3,49,-39,151,-189,381,-371,219,991,
 -4059,11473,-26193,53791,-100639,175107,-281581,
 410979,-506757,391647,401587,-2962157,9621235,
 -24977199,57408111,-120867183,236098467,
 -428880285,719991383,-1096219131,1442605443,
 -1401210665,99178397,4340546667]