id:A116279 - OEIS Search Results

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Numbers n such that n times n+2 gives the concatenation of two numbers m and m-1.

+0
5

36363636363, 45454545454, 54545454545, 63636363636, 72727272727, 81818181818, 90909090909, 428571428571428571428, 571428571428571428571, 714285714285714285714, 857142857142857142857 (list; graph; listen)

	OFFSET	`1,1`
	EXAMPLE	`36363636363 * 36363636365 = 13223140496//13223140495, where // denotes concatenation.`
	CROSSREFS	`Cf. A102567, A116273, A116280, A116286.` `Sequence in context: A115498 A115502 A022262 this_sequence A106497 A038832 A038821` `Adjacent sequences: A116276 A116277 A116278 this_sequence A116280 A116281 A116282`
	KEYWORD	`nonn,base`
	AUTHOR	`Giovanni Resta (g.resta(AT)iit.cnr.it), Feb 06 2006`

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Last modified November 18 20:14 EST 2008. Contains 147244 sequences.

AT&T Labs Research