A116231 Numbers k such that k*(k+9) gives the concatenation of two numbers m and m-9.

7, 63, 42752, 57240, 75422, 425071, 574921, 979527, 4301392, 5698600, 7028665, 4925000746, 5074999246, 7748266573, 8511881483, 8814851183, 7059602159671, 7106167933827, 7439286611620, 7485852385776, 46791112884924

Offset

1,1

Links

Table of n, a(n) for n=1..21.

Crossrefs

Cf. A116193, A116230, A116240.

Sequence in context: A137810 A316577 A036287 * A195630 A136955 A027767

Adjacent sequences: A116228 A116229 A116230 * A116232 A116233 A116234

Keyword

nonn,base

Author

Giovanni Resta, Feb 06 2006

Status

approved