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”).

A285437 as a simple table

na(n)
01
12
22
34
44
58
640
780
816
932
10160
11320
121088
132176
1410880
1521760
16256
17512
182560
195120
2017408
2134816
22174080
23348160
241052672
252105344
2610526720
2721053440
2871581696
29143163392
30715816960
311431633920
3265536
33131072
34655360
351310720
364456448
378912896

[1,2,2,4,4,8,40,80,16,32,160,320,1088,2176,10880,
 21760,256,512,2560,5120,17408,34816,174080,348160,
 1052672,2105344,10526720,21053440,71581696,
 143163392,715816960,1431633920,65536,131072,
 655360,1310720,4456448,8912896]