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A053014 Smallest number which has n successive divisors such that the quotients all begin with the same digit. 0
30, 60, 840, 10080, 110880, 1441440, 15135120, 21162960, 21162960 (list; graph; refs; listen; history; text; internal format)
OFFSET

2,1

REFERENCES

Denis Borris, Ken Duisenberg's Puzzle of the Week Feb. 15 2000

LINKS

Table of n, a(n) for n=2..10.

Source

EXAMPLE

a(4)=840 since 840/5=168, 840/6=140, 840/7=120 and 840/8=105 all start with 1

CROSSREFS

Cf. A000142.

Sequence in context: A064783 A228877 A258879 * A042784 A042786 A042782

Adjacent sequences:  A053011 A053012 A053013 * A053015 A053016 A053017

KEYWORD

nonn,base,more

AUTHOR

Henry Bottomley, Feb 22 2000

STATUS

approved

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Last modified April 19 16:18 EDT 2019. Contains 322282 sequences. (Running on oeis4.)