|
Search: id:A129848
|
|
|
| A129848 |
|
Numbers n such that n and 4n share at least one digit. |
|
+0
1
|
|
| 10, 16, 20, 23, 28, 30, 31, 32, 33, 34, 40, 41, 46, 49, 50, 52, 60, 62, 64, 65, 66, 67, 69, 70, 72, 80, 82, 83, 87, 90, 93, 98, 99, 100, 101, 102, 103, 104, 105, 110, 114, 116, 120, 123, 124, 125, 128, 129, 130, 132, 133, 134, 135, 140, 141, 145, 146, 149, 150, 153
(list; graph; listen)
|
|
|
OFFSET
|
1,1
|
|
|
MAPLE
|
a:=proc(n) if nops(convert(convert(n, base, 10), set) intersect convert(convert(4*n, base, 10), set))>0 then n else fi end: seq(a(n), n=1..180); - Emeric Deutsch (deutsch(AT)duke.poly.edu), May 27 2007
|
|
MATHEMATICA
|
Select[Range[300], Length[Intersection[IntegerDigits[ # ], IntegerDigits[4*# ]]]> 0 &] - Stefan Steinerberger (stefan.steinerberger(AT)gmail.com), May 24 2007
|
|
CROSSREFS
|
Sequence in context: A106695 A053747 A004260 this_sequence A083118 A004261 A136799
Adjacent sequences: A129845 A129846 A129847 this_sequence A129849 A129850 A129851
|
|
KEYWORD
|
base,easy,nonn
|
|
AUTHOR
|
Eric Angelini (eric.angelini(AT)kntvBe), May 22 2007
|
|
EXTENSIONS
|
More terms from Stefan Steinerberger (stefan.steinerberger(AT)gmail.com) and Emeric Deutsch (deutsch(AT)duke.poly.edu), May 24 2007
|
|
|
Search completed in 0.002 seconds
|
