login

A136581 as a simple table

na(n)
01
10
21
32
40
52
60
76
80
96
1024
110
1224
130
1424
150
16120
170
18120
190
20120
21720
220
23720
240
25720
260
27720
280
295040
300
315040
320
335040
340
355040

[1,0,1,2,0,2,0,6,0,6,24,0,24,0,24,0,120,0,120,0,
 120,720,0,720,0,720,0,720,0,5040,0,5040,0,5040,0,
 5040]