login

A001789 as a simple table

na(n)
31
48
540
6160
7560
81792
95376
1015360
1142240
12112640
13292864
14745472
151863680
164587520
1711141120
1826738688
1963504384
20149422080
21348651520
22807403520
231857028096
244244635648
259646899200
2621810380800
2749073356800
28109924319232

[1,8,40,160,560,1792,5376,15360,42240,112640,
 292864,745472,1863680,4587520,11141120,26738688,
 63504384,149422080,348651520,807403520,1857028096,
 4244635648,9646899200,21810380800,49073356800,
 109924319232]