login

A218405 as a simple table

na(n)
14
247616
3293760
41782144
53485664
6134209536
7282977280
8746444160
91459956960
101684126080
111716728832
1227298252800
1341233360896
14376591138560
15719045268480
161622308746240
1738965526046720
1841769966551040
19985261739212800
203067660098994176

[4,47616,293760,1782144,3485664,134209536,
 282977280,746444160,1459956960,1684126080,
 1716728832,27298252800,41233360896,376591138560,
 719045268480,1622308746240,38965526046720,
 41769966551040,985261739212800,3067660098994176]