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”).

A290414 as a simple table

na(n)
01
12
25
314
425
563
6112
7255
8480
91023
101984
114095
128064
1316383
1432512
1565535
16130560
17262143
18523264
191048575
202095104
214194303
228384512
2316777215
2433546240
2567108863
26134201344
27268435455
28536838144
291073741823
302147418112
314294967295
328589803520

[1,2,5,14,25,63,112,255,480,1023,1984,4095,8064,
 16383,32512,65535,130560,262143,523264,1048575,
 2095104,4194303,8384512,16777215,33546240,
 67108863,134201344,268435455,536838144,1073741823,
 2147418112,4294967295,8589803520]