A116287 Numbers k such that k*(k+3) gives the concatenation of a number m with itself.

8, 98, 767, 858, 910, 998, 3285, 6713, 9998, 45452, 54546, 99998, 990100, 999998, 8181819, 9999998, 70588233, 99999998, 343130554, 362637363, 363636361, 420053631, 421052632, 497975709, 502024289, 578947366, 579946367

Offset

1,1

Links

Table of n, a(n) for n=1..27.

Crossrefs

Cf. A116130, A116280, A116286, A116288, A116296.

Sequence in context: A302527 A303409 A264168 * A290242 A116229 A099150

Adjacent sequences: A116284 A116285 A116286 * A116288 A116289 A116290

Keyword

nonn,base

Author

Giovanni Resta, Feb 06 2006

Status

approved