A369092 - OEIS

%I #12 Jan 15 2024 10:04:41

%S 1,2,3,4,5,6,7,8,9,10,12,13,14,15,16,17,18,19,21,22,31,41,51,61,71,81,

%T 91,101,110,112,113,114,115,116,117,118,119,121,122,131,141,151,161,

%U 171,181,191,221,322,422,522,622,722,822,922,1022,1101,1121,1131,1141,1151,1161,1171,1181,1191

%N Numbers which are a substring of their own "Look and Say" description (cf. A045918).

%C It is likely the 171 terms of the attached bfile, with a(171) = 22119221, forms the complete list of such numbers, although this is unknown.

%H Scott R. Shannon, <a href="/A369092/b369092.txt">Table of n, a(n) for n = 1..171</a>

%e 1 is a term as A045918(1) = 10, which contains "1" as a substring.

%e 101 is a term as A045918(101) = 111011, which contains "101" as a substring.

%e 22119221 is a term as A045918(22119221) = 2221192211, which contains "22119221" as a substring. It is likely this is the last possible term.

%Y Cf. A369132 (description is a substring of the number), A005150, A045918.

%K nonn,base

%O 1,2

%A _Scott R. Shannon_, Jan 13 2024