login

A253010 as a simple table

na(n)
120
2231
32902
433533
5309990
62327062
714697256
8541365583
99617848524
1090094114144
11499454404412
121875291094664
135288570216780
1412109231279152
1523836473347284
1642007667355832
1768169527721372
18103870860371584

[20,231,2902,33533,309990,2327062,14697256,
 541365583,9617848524,90094114144,499454404412,
 1875291094664,5288570216780,12109231279152,
 23836473347284,42007667355832,68169527721372,
 103870860371584]