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A215413 as a simple table

na(n)
-11
01
13
2-2
33
4-6
510
6-12
715
8-22
930
10-36
1144
12-60
1378
14-96
15117
16-150
17190
18-228
19276
20-340
21420
22-504
23603
24-732
25885
26-1052
271245
28-1488
291770
30-2088
312454
32-2902
333420
34-3996
354666
36-5460
376378
38-7400
398583
40-9972
4111566
42-13344
4315378
44-17752
4520448

[1,1,3,-2,3,-6,10,-12,15,-22,30,-36,44,-60,78,-96,
 117,-150,190,-228,276,-340,420,-504,603,-732,885,
 -1052,1245,-1488,1770,-2088,2454,-2902,3420,-3996,
 4666,-5460,6378,-7400,8583,-9972,11566,-13344,
 15378,-17752,20448]