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”).

A211882 as a simple table

na(n)
12
22
34
44
54
616
74
88
98
1016
114
12256
134
1416
1516
1616
174
18512
194
20256
2116
2216
234
244096
258
2616
2716
28256
294
3065536
314
3232
3316
3416
3516
36262144
374
3816
3916
404096
414
4265536
434
44256
4564
4616
474
4865536
498
50512
5116
52256
534
5465536
5516
564096
5716
5816
594
604294967296

[2,2,4,4,4,16,4,8,8,16,4,256,4,16,16,16,4,512,4,
 256,16,16,4,4096,8,16,16,256,4,65536,4,32,16,16,
 16,262144,4,16,16,4096,4,65536,4,256,64,16,4,
 65536,8,512,16,256,4,65536,16,4096,16,16,4,
 4294967296]