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A051671 Smallest positive number whose digits concatenated with all previous terms forms a perfect square. 8
4, 9, 284, 61209, 14204828164, 4440027571600000000001, 7667716927194638935286982918857620344809476 (list; graph; refs; listen; history; text; internal format)
OFFSET
0,1
REFERENCES
A. Murthy, Smar. Notions J. Vol. 11 N. 1-2-3 Spring 2000.
LINKS
EXAMPLE
284 belongs to the sequence because 49284=222^2.
CROSSREFS
Sequence in context: A175700 A035126 A178454 * A109103 A029734 A085065
KEYWORD
nice,nonn,easy,base
AUTHOR
EXTENSIONS
More terms from Patrick De Geest, Dec 15 1999
STATUS
approved

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Last modified March 29 02:23 EDT 2024. Contains 371264 sequences. (Running on oeis4.)