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A054220 Concatenation of n in base 2 up to base 10 is divisible by at least one of these base b numbers, all numbers interpreted as decimals. 1
1, 2, 3, 4, 6, 8, 9, 10, 12, 14, 15, 16, 20, 24, 32, 36, 40, 64, 70, 72, 80, 96, 100, 104, 116, 128, 131, 144, 160, 168, 192, 200, 216, 256, 288, 292, 293, 300, 320, 336, 344, 360, 362, 370, 380, 400, 432, 512, 536, 544, 560, 576, 640, 648, 727, 768, 800, 864 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

LINKS

Table of n, a(n) for n=1..58.

EXAMPLE

n=9 -> 1001{2}=100{3}=21{4}=14{5}=13{6}=12{7}=11{8}=10{9}=9{10} -> 10011002114131211109 which is divisible by 21 (from 9 in base 4).

CROSSREFS

Cf. A054219.

Sequence in context: A256389 A225729 A035033 * A196277 A280196 A143896

Adjacent sequences:  A054217 A054218 A054219 * A054221 A054222 A054223

KEYWORD

nonn,base

AUTHOR

Patrick De Geest, Feb 15 2000

STATUS

approved

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Last modified March 30 06:59 EDT 2020. Contains 333119 sequences. (Running on oeis4.)