login

A186409 as a simple table

na(n)
13
26
320
454
5275
6556
71965
83498
910206
1043453
1168135
12242812
13536104
14785437
151644136
164712040
1712760906
1817591088
1944736332
2081493581
21109311863
22257863391
23448980978
241007135164
252840344772
264695605081
276015397025
289803584533
2912473509636
3020063812526

[3,6,20,54,275,556,1965,3498,10206,43453,68135,
 242812,536104,785437,1644136,4712040,12760906,
 17591088,44736332,81493581,109311863,257863391,
 448980978,1007135164,2840344772,4695605081,
 6015397025,9803584533,12473509636,20063812526]