A116289 Numbers k such that k*(k+5) gives the concatenation of a number m with itself.

6, 96, 385, 429, 567, 611, 814, 996, 4521, 5475, 9996, 90910, 99996, 316832, 683164, 999996, 3636364, 6363632, 9999996, 82352942, 99999996, 331668332, 368421053, 395604391, 442767754, 461538462, 488721800, 511278196

Offset

1,1

Links

Table of n, a(n) for n=1..28.

Crossrefs

Cf. A028557, A020338.

Cf. A116158, A116281, A116288, A116290, A116303.

Sequence in context: A336825 A116158 A275561 * A116256 A275086 A222971

Adjacent sequences: A116286 A116287 A116288 * A116290 A116291 A116292

Keyword

nonn,base

Author

Giovanni Resta, Feb 06 2006

Status

approved