login

A261320 as a simple table

na(n)
01
1-4
212
3-28
460
5-120
6228
7-416
8732
9-1252
102088
11-3408
125460
13-8600
1413344
15-20424
1630876
17-46152
1868268
19-100016
20145224
21-209120
22298800
23-423840
24597108
25-835804
261162824
27-1608508
282212896
29-3028632
304124664
31-5590976
327544604
33-10137264
3413565016

[1,-4,12,-28,60,-120,228,-416,732,-1252,2088,
 -3408,5460,-8600,13344,-20424,30876,-46152,68268,
 -100016,145224,-209120,298800,-423840,597108,
 -835804,1162824,-1608508,2212896,-3028632,4124664,
 -5590976,7544604,-10137264,13565016]