login

A065887 as a simple table

na(n)
01
11
22
36
412
560
660
7420
81680
95040
105040
1155440
12332640
134324320
148648640
1543243200
16172972800
172940537600
188821612800
19167610643200
20335221286400
217039647014400
2214079294028800
23323823762662400
24647647525324800
253238237626624000
266476475253248000

[1,1,2,6,12,60,60,420,1680,5040,5040,55440,332640,
 4324320,8648640,43243200,172972800,2940537600,
 8821612800,167610643200,335221286400,
 7039647014400,14079294028800,323823762662400,
 647647525324800,3238237626624000,6476475253248000]