login

Reminder: The OEIS is hiring a new managing editor, and the application deadline is January 26.

A290198 as a simple table

na(n)
01
12
25
313
430
562
6126
7254
8510
91022
102046
114094
128190
1316382
1432766
1565534
16131070
17262142
18524286
191048574
202097150
214194302
228388606
2316777214
2433554430
2567108862
26134217726
27268435454
28536870910
291073741822
302147483646
314294967294
328589934590

[1,2,5,13,30,62,126,254,510,1022,2046,4094,8190,
 16382,32766,65534,131070,262142,524286,1048574,
 2097150,4194302,8388606,16777214,33554430,
 67108862,134217726,268435454,536870910,1073741822,
 2147483646,4294967294,8589934590]