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 A116193 Numbers k such that k concatenated with k+5 gives the product of two numbers which differ by 5. 11
 11, 45, 18281, 32769, 56891, 180689, 330539, 959481, 1850201, 3247409, 4940219, 2425563239, 2575561739, 6003563495, 7245212645, 7770160145, 4983798265289, 5049762270381, 5534298528989, 5603798594169, 21894082450101 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS Also numbers k such that k concatenated with k+9 gives the product of two numbers which differ by 3. For proof that this is the same sequence compare A116133. Also numbers k such that k concatenated with k-9 gives the product of two numbers which differ by 9. LINKS EXAMPLE 7770160145//7770160136 = 8814851183 * 8814851192, where // denotes concatenation. CROSSREFS Cf. A116205, A116187, A116349. Cf. A116179, A115430, A116194, A116200, A116324. Cf. A116099, A116109, A116231. Sequence in context: A231438 A322560 A110114 * A282095 A063158 A081587 Adjacent sequences: A116190 A116191 A116192 * A116194 A116195 A116196 KEYWORD nonn,base AUTHOR Giovanni Resta, Feb 06 2006 EXTENSIONS Edited by N. J. A. Sloane, Apr 12 2007 STATUS approved

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Last modified March 23 23:09 EDT 2023. Contains 361454 sequences. (Running on oeis4.)