login

A253655 as a simple table

na(n)
19
2116
32580
419544
5295020
6804076
74022064
87839780
924670536
1099133020
11147912160
12427612404
13791672280
141053546956
151796518224
163694034916
177030054140
188586690620
1915076346164
2021349986840
2125222305336
2240514492720
2354489965796
2482830096360
25138828513824
26176919851700

[9,116,2580,19544,295020,804076,4022064,7839780,
 24670536,99133020,147912160,427612404,791672280,
 1053546956,1796518224,3694034916,7030054140,
 8586690620,15076346164,21349986840,25222305336,
 40514492720,54489965796,82830096360,138828513824,
 176919851700]