A212201 Records in A212200.
1, 3, 15, 85, 255, 21845, 65535, 1431655765, 4294967295
Offset: 1
Extensions
a(7)-a(9) from Alex Ryba, Jun 10 2012
This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.