login

A360516 as a simple table

na(n)
11
22
36
418
580
6370
72352
814434
9117504
10902178
118983040
1282751218
13973639680
1410464269842
15142066391040
161744984627650
1726849099841536
18371007716472130
196380079728689152
2097957282718195410
211861853565120675840
2231444800527373324210
23654585210392831590400

[1,2,6,18,80,370,2352,14434,117504,902178,8983040,
 82751218,973639680,10464269842,142066391040,
 1744984627650,26849099841536,371007716472130,
 6380079728689152,97957282718195410,
 1861853565120675840,31444800527373324210,
 654585210392831590400]