id:A113797 - OEIS Search Results

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Numbers n such that the digits of n can be divided in two contiguous parts, n=xy, such that n=|x^2-y^2|.

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48, 100, 147, 3468, 10000, 10101, 13467, 16128, 34188, 140400, 190476, 216513, 300625, 334668, 416768, 484848, 530901, 1000000, 1010100, 1016127, 1034187, 1140399, 1190475, 1216512, 1300624, 1334667, 1416767, 1484847, 1530900 (list; graph; listen)

	OFFSET	`1,1`
	EXAMPLE	`3468 = \|34^2-68^2\|`
	MATHEMATICA	`lst = {}; Do[p = 10; While[n > p, If[Abs[Mod[n, p]^2 - Floor[n/p]^2] == n, AppendTo[lst, n]]; p*=10], {n, 10^6}]; lst`
	CROSSREFS	`Sequence in context: A044186 A044567 A070258 this_sequence A044235 A044616 A114444` `Adjacent sequences: A113794 A113795 A113796 this_sequence A113798 A113799 A113800`
	KEYWORD	`base,nonn`
	AUTHOR	`Giovanni Resta (g.resta(AT)iit.cnr.it), Jan 21 2006`

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Last modified November 29 12:46 EST 2009. Contains 167659 sequences.

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