login

A187986 as a simple table

na(n)
10
27
315
460
5222
6746
72742
89689
934588
10124062
11443469
121591177
135710783
1420514746
1573779819
16265523140
17956384656
183447285428
1912433999199
2044877035870
21162066465738
22585603996081
232117103447068
247657611562951
2527710598382843
26100320181906860
27363337451934873
281316442508560564

[0,7,15,60,222,746,2742,9689,34588,124062,443469,
 1591177,5710783,20514746,73779819,265523140,
 956384656,3447285428,12433999199,44877035870,
 162066465738,585603996081,2117103447068,
 7657611562951,27710598382843,100320181906860,
 363337451934873,1316442508560564]