login

A156589 as a simple table

na(n)
0-1
11
211
355
4239
5991
64031
716255
865279
9261631
101047551
114192255
1216773119
1367100671
14268419071
151073709055
164294901759
1717179738111
1868719214591
19274877382655
201099510579199
214398044413951
2217592181850111
2370368735789055

[-1,1,11,55,239,991,4031,16255,65279,261631,
 1047551,4192255,16773119,67100671,268419071,
 1073709055,4294901759,17179738111,68719214591,
 274877382655,1099510579199,4398044413951,
 17592181850111,70368735789055]