A175071 Natural numbers m with result 1 under iterations of {r mod (max prime p < r)} starting at r = m.

1, 3, 4, 6, 8, 10, 11, 12, 14, 16, 17, 18, 20, 22, 23, 24, 26, 27, 29, 30, 32, 34, 35, 37, 38, 40, 41, 42, 44, 46, 47, 48, 50, 51, 53, 54, 56, 57, 59, 60, 62, 64, 65, 67, 68, 70, 71, 72, 74, 76, 77, 79, 80, 82, 83, 84, 86, 87, 89, 90, 92, 93, 95, 97, 98, 100, 101, 102

Offset

1,2

Comments

Complement of A175072. Union of A175073 and A175074. [From Jaroslav Krizek, Jan 30 2010]

Links

Table of n, a(n) for n=1..68.

Example

Iteration procedure for a(6) = 10: 10 mod 7 = 3, 3 mod 2 = 1. Iteration procedure for a(7) = 11: 11 mod 7 = 4, 4 mod 3 = 1.

Mathematica

nn1Q[n_]:=Last[NestWhileList[Mod[#, NextPrime[#, -1]]&, n, #>1&]]!=0; Select[ Range[ 110], nn1Q] (* Harvey P. Dale, May 05 2015 *)

Crossrefs

Sequence in context: A335194 A307647 A088070 * A336822 A140497 A260479

Adjacent sequences: A175068 A175069 A175070 * A175072 A175073 A175074

Keyword

nonn

Author

Jaroslav Krizek, Jan 23 2010

Status

approved