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A244047
Maximal nonempty {1,3}-chunks of a 4-day-old string in a "Look and Say" sequence.
0
1, 3, 11, 13, 31, 111, 113, 131, 133, 311, 1113, 1131, 1133, 1311, 1331, 3111, 3113, 11131, 11133, 11311, 11331, 13111, 13113, 13311, 31131, 31133, 111311, 111331, 113111, 113311, 311311, 311331, 1113111, 1113311, 3113111, 3113311
OFFSET
1,2
COMMENTS
A chunk of a string is a substring of consecutive digits.
A 4-day-old string has no chunks of the form 233, 13112 or 13312.
CROSSREFS
Cf. A005150.
Sequence in context: A125308 A260044 A199303 * A020451 A018450 A302304
KEYWORD
nonn,fini,full,base
AUTHOR
STATUS
approved