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A180958 as a simple table

na(n)
01
11
22
32
42
5-1
6-8
7-25
8-57
9-114
10-202
11-322
12-447
13-496
14-271
15625
162914
177762
1816834
1932063
2054760
2183319
22108375
23103726
2411110
25-282498
26-973439
27-2366432
28-4869919
29-8903455
30-14604094
31-21135454
32-25294718
33-19009153
3414697432
35107405319
36311830247
37705982670
381386882198
392436851006
403830805953

[1,1,2,2,2,-1,-8,-25,-57,-114,-202,-322,-447,-496,
 -271,625,2914,7762,16834,32063,54760,83319,108375,
 103726,11110,-282498,-973439,-2366432,-4869919,
 -8903455,-14604094,-21135454,-25294718,-19009153,
 14697432,107405319,311830247,705982670,1386882198,
 2436851006,3830805953]