OFFSET
0,1
COMMENTS
Method A = 'frequency' followed by 'digit'-indication.
LINKS
Reinhard Zumkeller, Table of n, a(n) for n = 0..21
Eric Weisstein's World of Mathematics, Look and Say Sequence
Wikipedia, Look-and-say sequence
FORMULA
EXAMPLE
The term after 1311 is obtained by saying "two 1's, one 3, one 1", which gives 211311.
MATHEMATICA
PROG
(Haskell)
a022507 n = a022507_list !! n
a022507_list = iterate (a045918 . a004086) 3
-- Reinhard Zumkeller, Mar 02 2014
CROSSREFS
KEYWORD
nonn,base,easy,nice
AUTHOR
EXTENSIONS
More terms from Erich Friedman
STATUS
approved