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A368586 as a simple table

na(n)
00
11
23
36
411
515
636
7-42
8666
9-5499
1055705
11-611754
127342413
13-95449549
141336296066
15-20044437930
16320711010756
17-5452087178007
1898137569210111
19-1864613814984794
2037292276299704735
21-783137802293788809
2217229031650463366448
23-396267727960657413354

[0,1,3,6,11,15,36,-42,666,-5499,55705,-611754,
 7342413,-95449549,1336296066,-20044437930,
 320711010756,-5452087178007,98137569210111,
 -1864613814984794,37292276299704735,
 -783137802293788809,17229031650463366448,
 -396267727960657413354]