A051671 - OEIS

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A051671

Smallest positive number whose digits concatenated with all previous terms forms a perfect square.

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	`Table of n, a(n) for n=0..6.`
	EXAMPLE	`284 belongs to the sequence because 49284=222^2.`
	CROSSREFS	`Cf. A048559, A048560, A051670.` `Sequence in context: A175700 A035126 A178454 * A109103 A029734 A085065` `Adjacent sequences: A051668 A051669 A051670 * A051672 A051673 A051674`
	KEYWORD	`nice,nonn,easy,base`
	AUTHOR	`Felice Russo`
	EXTENSIONS	`More terms from Patrick De Geest, Dec 15 1999`
	STATUS	`approved`

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Last modified March 8 13:23 EST 2021. Contains 341948 sequences. (Running on oeis4.)