A087970 Maximal term in Collatz-iteration started at 1+2^n.

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

Offset

1,1

Links

Table of n, a(n) for n=1..25.

Formula

a(n)=A025586[1+2^n]

Crossrefs

Cf. A025586, A087701, A087972.

Sequence in context: A278348 A022350 A226068 * A230977 A174683 A174994

Adjacent sequences: A087967 A087968 A087969 * A087971 A087972 A087973

Keyword

nonn

Author

Labos Elemer, Sep 24 2003

Status

approved