login

A137381 as a simple table

na(n)
11
22
32
41
56
66
70
8-12
90
1024
11-12
12120
130
14-240
15120
16360
17-2280
180
194800
20-3600
21720
22-13260
2368040
240
25-151200
26138600
27-45360
285040
29638400
30-2899680
310
326773760
33-7056000
342963520
35-564480
3640320
37-39630528
38166320000
390
40-406425600
41464002560
42-228614400
4357576960
44-7257600
45362880

[1,2,2,1,6,6,0,-12,0,24,-12,120,0,-240,120,360,
 -2280,0,4800,-3600,720,-13260,68040,0,-151200,
 138600,-45360,5040,638400,-2899680,0,6773760,
 -7056000,2963520,-564480,40320,-39630528,
 166320000,0,-406425600,464002560,-228614400,
 57576960,-7257600,362880]