login
This site is supported by donations to The OEIS Foundation.

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A001745 Numbers such that at least one digit contains a loop (version 2). Also called "holey" or "holy" numbers. 6
0, 4, 6, 8, 9, 10, 14, 16, 18, 19, 20, 24, 26, 28, 29, 30, 34, 36, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 54, 56, 58, 59, 60, 61, 62, 63, 64, 65, 66, 67, 68, 69, 70, 74, 76, 78, 79, 80, 81, 82, 83, 84, 85, 86, 87, 88, 89, 90, 91, 92, 93, 94, 95 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

LINKS

T. D. Noe, Table of n, a(n) for n = 1..1000

MATHEMATICA

Select[Range[0, 200], Length[Intersection[{0, 4, 6, 8, 9}, Union[IntegerDigits[#]]]] > 0 &] (* T. D. Noe, Aug 10 2012 *)

PROG

(PARI) instr(x, n)=#setintersect(Set(digits(x)), [n])>0;

f(n) = for(x=0, n, y=instr(x, 4)+instr(x, 6)+instr(x, 8)+instr(x, 9)+instr(x, 0); if(y>0, print1(x", "))) \\ Cino Hilliard, Feb 23 2005; corrected by Charles R Greathouse IV, Jan 21 2016

CROSSREFS

Sequence in context: A180366 A323644 A164702 * A276628 A050695 A035139

Adjacent sequences:  A001742 A001743 A001744 * A001746 A001747 A001748

KEYWORD

base,nonn

AUTHOR

N. J. A. Sloane.

STATUS

approved

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recent
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy. .

Last modified November 13 20:57 EST 2019. Contains 329106 sequences. (Running on oeis4.)