login

Reminder: The OEIS is hiring a new managing editor, and the application deadline is January 26.

A229789 as a simple table

na(n)
01
1-2
25
34
4-28
535
6-8
7108
8-378
9315
1016
11-352
122376
13-5544
143465
15-32
161040
17-11440
1851480
19-90090
2045045
2164
22-2880
2346800
24-343200
251158300
26-1621620
27675675
28-128
297616
30-171360
311856400
32-10210200
3327567540
34-32162130
3511486475
36256
37-19456
38578816
39-8682240
4070543200
41-310390080
42698377680
43-698377680
44218243025

[1,-2,5,4,-28,35,-8,108,-378,315,16,-352,2376,
 -5544,3465,-32,1040,-11440,51480,-90090,45045,64,
 -2880,46800,-343200,1158300,-1621620,675675,-128,
 7616,-171360,1856400,-10210200,27567540,-32162130,
 11486475,256,-19456,578816,-8682240,70543200,
 -310390080,698377680,-698377680,218243025]