id:A115537 - OEIS Search Results

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Numbers n such that the concatenation of 4*n with n gives a square.

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17728531856, 27700831025, 39889196676, 54293628809, 70914127424, 89750692521, 32653061224489796, 73469387755102041, 1245674740484429065743944636678200692041522491349481 (list; graph; listen)

	OFFSET	`1,1`
	EXAMPLE	`70914127424_17728531856 = 84210526316^2.`
	CROSSREFS	`Cf. A102567, A106497, A115527 - A115556.` `Sequence in context: A022241 A101815 A113643 this_sequence A118466 A003810 A003803` `Adjacent sequences: A115534 A115535 A115536 this_sequence A115538 A115539 A115540`
	KEYWORD	`nonn,base`
	AUTHOR	`Giovanni Resta (g.resta(AT)iit.cnr.it), Jan 25 2006`

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Last modified August 19 23:53 EDT 2008. Contains 142930 sequences.

AT&T Labs Research