login

A121813 as a simple table

na(n)
10
21
31
41
51
64
713
8121
98401
1017724001
1119980403610080
123017939125082738100693961
131069257489122187637992525695378883464262898201

[0,1,1,1,1,4,13,121,8401,17724001,19980403610080,
 3017939125082738100693961,
 1069257489122187637992525695378883464262898201]