login

A081918 as a simple table

na(n)
01
11
25
336
4352
54375
666096
71176490
824117248
9559607373
1014500000000
11414998793616
1213002646487040
13442663617327139
1416271152851709952
15642244372558593750
1627093655358260903936
171216529796891671712025

[1,1,5,36,352,4375,66096,1176490,24117248,
 559607373,14500000000,414998793616,13002646487040,
 442663617327139,16271152851709952,
 642244372558593750,27093655358260903936,
 1216529796891671712025]