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A094333 a(1) = 1, a(n) = least multiple of a(n-1) which is a concatenation of successive numbers. 1
1, 2, 4, 8, 56, 5152, 17181920, 479839479840, 552587148319552587148320 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

LINKS

Table of n, a(n) for n=1..9.

EXAMPLE

a(5) = 56 and a(6) = 5152 (concatenation of 51 and 52 ), 5152= 56*92.

CROSSREFS

Sequence in context: A068620 A073953 A206850 * A018473 A004094 A028910

Adjacent sequences:  A094330 A094331 A094332 * A094334 A094335 A094336

KEYWORD

base,more,nonn

AUTHOR

Amarnath Murthy (amarnath_murthy(AT)yahoo.com), May 16 2004

EXTENSIONS

a(7), a(8) from D. S. McNeil, Mar 23 2009

a(9) from Donovan Johnson, Mar 09 2011

STATUS

approved

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Last modified May 25 02:25 EDT 2013. Contains 225634 sequences.