A116242 Numbers k such that k*(k+6) gives the concatenation of two numbers m and m-7.

8871, 9008, 83352839, 99000098, 329767122285, 670232877710, 738226276370, 933006600338, 999000000998, 3779410975143112, 3872816717528064, 4250291784692547, 4278630943941864, 4372036686326816, 4749511753491299

Offset

1,1

Links

Table of n, a(n) for n=1..15.

Example

99000098 * 99000104 = 98010199//98010192, where // denotes concatenation.

Crossrefs

Cf. A115426, A116237, A116241, A116243, A116256.

Sequence in context: A071564 A031625 A046506 * A116275 A116295 A115427

Adjacent sequences: A116239 A116240 A116241 * A116243 A116244 A116245

Keyword

nonn,base

Author

Giovanni Resta, Feb 06 2006

Status

approved