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A044348
Numbers k such that the string 1,6 occurs in the base 10 representation of k but not of k-1.
1
16, 116, 160, 216, 316, 416, 516, 616, 716, 816, 916, 1016, 1116, 1160, 1216, 1316, 1416, 1516, 1600, 1716, 1816, 1916, 2016, 2116, 2160, 2216, 2316, 2416, 2516, 2616, 2716, 2816, 2916, 3016, 3116, 3160, 3216, 3316, 3416, 3516, 3616, 3716, 3816, 3916, 4016, 4116, 4160
OFFSET
1,1
MATHEMATICA
A044348Q[k_] := StringContainsQ[IntegerString[k], "16"] && StringFreeQ[IntegerString[k - 1], "16"];
Select[Range[5000], A044348Q] (* Paolo Xausa, Nov 03 2025 *)
CROSSREFS
Sequence in context: A265214 A055994 A293876 * A044729 A251423 A279163
KEYWORD
nonn,base
EXTENSIONS
More terms from Paolo Xausa, Nov 03 2025
STATUS
approved