login

A199970 as a simple table

na(n)
10
23
34
46
512
60
760
8420
9840
100
112520
120
1327720
140
150
16360360
17720720
180
1912252240
200
210
220
23232792560
240
255354228880
260
2726771144400
280
2980313433200
300
312329089562800
3272201776446800
330
340
350
360
37144403552893600
380
390
400
415342931457063200
420
43219060189739591200

[0,3,4,6,12,0,60,420,840,0,2520,0,27720,0,0,
 360360,720720,0,12252240,0,0,0,232792560,0,
 5354228880,0,26771144400,0,80313433200,0,
 2329089562800,72201776446800,0,0,0,0,
 144403552893600,0,0,0,5342931457063200,0,
 219060189739591200]