A102444 Smallest number m such that A102442(m)=n.

1, 5, 11, 23, 47, 149, 359, 719, 1439, 2879, 12097, 24197, 48407, 96821, 193649, 968237, 2614327, 5809201, 11618413, 25055857, 75167579, 225502703, 451005407, 2109888899, 4510054327, 14500925539, 43502776619, 87005553241, 174011106487

Offset

1,2

Comments

Primes: a(n+1) > 2*a(n).

Links

Table of n, a(n) for n=1..29.

Crossrefs

Cf. A102440.

A056637 describes another iteration that reduces primes to 2 and 3.

Sequence in context: A306662 A052940 A191304 * A132177 A340340 A046138

Adjacent sequences: A102441 A102442 A102443 * A102445 A102446 A102447

Keyword

nonn

Author

Reinhard Zumkeller, Jan 09 2005

Extensions

More terms from David Wasserman, Apr 04 2008

Status

approved