A051003 Beastly (or hateful) numbers: numbers containing the string 666 in their decimal expansion.

666, 1666, 2666, 3666, 4666, 5666, 6660, 6661, 6662, 6663, 6664, 6665, 6666, 6667, 6668, 6669, 7666, 8666, 9666, 10666, 11666, 12666, 13666, 14666, 15666, 16660, 16661, 16662, 16663, 16664, 16665, 16666, 16667, 16668, 16669, 17666, 18666

Offset

1,1

Links

Jens Kruse Andersen, Table of n, a(n) for n = 1..1000

Tony Padilla and Brady Haran, The Most Evil Number, Numberphile video (2018)

Eric Weisstein's World of Mathematics, Beast Number

Mathematica

Select[Range[18666], ! StringFreeQ[ToString[#], "666"] &] (* Arkadiusz Wesolowski, Sep 08 2011 *)

Crossrefs

Cf. A131645, A057564, A002282, A138563, A043515, A046720, A186086.

Sequence in context: A202445 A062045 A043515 * A183655 A104181 A221014

Adjacent sequences: A051000 A051001 A051002 * A051004 A051005 A051006

Keyword

nonn,less,easy,base

Author

Eric W. Weisstein

Status

approved