A116268 Numbers k such that k*(k+5) gives the concatenation of two numbers m and m-3.

81, 77394227, 89158933, 36623663376237623663376335, 37633762366336633762366235, 62366237633663366237633761, 63376336623762376336623661, 86194223018927804587702128

Offset

1,1

Links

Table of n, a(n) for n=1..8.

Example

89158933 * 89158938 = 79493157//79493154, where // denotes concatenation.

Crossrefs

Cf. A028557, A116099, A116261, A116267, A116269, A116276.

Sequence in context: A277844 A162284 A309110 * A128838 A231484 A340398

Adjacent sequences: A116265 A116266 A116267 * A116269 A116270 A116271

Keyword

nonn,base

Author

Giovanni Resta, Feb 06 2006

Status

approved