login

A221757 as a simple table

na(n)
10
24
30
443
544
6736
71680
814548
947314
10307629
111201506
126768794
1329159864
14152481584
15692301668
163481342319
1716253985408
1880073291120
19379418253880
201849109113064
218830193356854
2242791854403241
23205182113819686

[0,4,0,43,44,736,1680,14548,47314,307629,1201506,
 6768794,29159864,152481584,692301668,3481342319,
 16253985408,80073291120,379418253880,
 1849109113064,8830193356854,42791854403241,
 205182113819686]