A087970 Maximal term in Collatz-iteration started at 2^n+1.
2, 16, 16, 52, 52, 100, 196, 9232, 9232, 1540, 3076, 9232, 12292, 24580, 49156, 98308, 196612, 393220, 786436, 1572868, 3145732, 6291460, 12582916, 25165828, 50331652, 100663300, 201326596, 402653188, 805306372, 1610612740, 3221225476, 6442450948, 12884901892
Offset: 0
Keywords
Links
- Amiram Eldar, Table of n, a(n) for n = 0..1000
Formula
a(n) = A025586(2^n+1).
Extensions
Offset changed to 0, a(0) prepended and more terms added by Amiram Eldar, Jun 04 2024