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

Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A116443 Numbers n which when sandwiched between two 8's give a multiple of n. 1
1, 2, 4, 8, 11, 13, 14, 22, 26, 28, 44, 52, 56, 77, 88, 91, 137, 146, 274, 292, 548, 584, 9091, 19802, 39604, 79208, 909091, 5882353, 10989011, 12987013, 13986014, 15037594, 16194332, 19138756, 21978022, 25974026, 27972028, 30075188 (list; graph; refs; listen; history; internal format)
OFFSET

1,2

EXAMPLE

91 belongs since 8918 is a multiple 91 (91*98).

MATHEMATICA

f[k_, d_] := Flatten@Table[Select[Divisors[k*(10^(i + 1) + 1)], IntegerLength[ # ] == i &], {i, d}]; f[8, 8] (*Chandler*)

CROSSREFS

Cf. A116436-A116444.

Sequence in context: A080152 A136994 A137288 * A078649 A161607 A022442

Adjacent sequences:  A116440 A116441 A116442 * A116444 A116445 A116446

KEYWORD

base,nonn

AUTHOR

Giovanni Resta (g.resta(AT)iit.cnr.it), Feb 15 2006

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Transforms | Puzzles | Hot | Classics
Recent Additions | More pages | Superseeker | Maintained by The OEIS Foundation Inc.

Content is available under The OEIS End-User License Agreement .

Last modified February 17 02:08 EST 2012. Contains 205978 sequences.