A208834 Look and say sequence starting with 373.

373, 131713, 111311171113, 311331173113, 1321232117132113, 1113121112131221171113122113, 311311123112111311222117311311222113, 132113311213211231132132211713211321322113

Offset: 1

Author

Alonso del Arte, Mar 01 2012

Keywords

• nonn
• easy
• base

Comments

The first four terms are prime, thus the first three terms are members of A056815.

The fifth term is 17 * 18131 * 4286555419.

References

• David Wells, Prime Numbers: The Most Mysterious Figures in Math. Hoboken, New Jersey: John Wiley & Sons (2005): p. 41

Links

• Chris Caldwell, Prime Curios! 373, The Prime Pages

Crossrefs

Cf. A045918.

Programs

Mathematica

(* First run one of the programs from A056815 to define the LookAndSay function *) NestList[LookAndSay, 373, 10]