A116239 Numbers k such that k*(k+8) gives the concatenation of two numbers m and m-8.

7743, 8017, 33294314, 66705679, 98000197, 340465755421, 476452552741, 523547447252, 659534244572, 866013200677, 998000001997, 3695104677080130, 3755782995538764, 4198081170077527, 4803478892324962, 5196521107675031

Offset

1,1

Links

Table of n, a(n) for n=1..16.

Example

98000197 * 98000205 = 96040393//96040385, where // denotes concatenation.

Crossrefs

Cf. A115429, A116238, A116240, A116244.

Sequence in context: A146960 A179574 A229419 * A094400 A116282 A187958

Adjacent sequences: A116236 A116237 A116238 * A116240 A116241 A116242

Keyword

nonn,base

Author

Giovanni Resta, Feb 06 2006

Status

approved