login

Year-end appeal: Please make a donation to the OEIS Foundation to support ongoing development and maintenance of the OEIS. We are now in our 61st year, we have over 378,000 sequences, and we’ve reached 11,000 citations (which often say “discovered thanks to the OEIS”).

A157818 as a simple table

na(n)
01
14
248
364
43840
51024
686016
716384
8983040
9262144
1034603008
114194304
1222900899840
1367108864
14805306368
151073741824
161095216660480
1717179869184
1827419071217664
19274877906944
20181419418583040
214398046511104

[1,4,48,64,3840,1024,86016,16384,983040,262144,
 34603008,4194304,22900899840,67108864,805306368,
 1073741824,1095216660480,17179869184,
 27419071217664,274877906944,181419418583040,
 4398046511104]