

A113695


a(1) = 1, a(2) = 2 then the least number starting with n so that every term divides the concatenation of its neighbors.


1



1, 2, 30, 40, 520, 6120, 75080, 821920, 9125440, 1012882880, 11690270720, 127219466240, 1377297694720, 14982604718080, 1512710259671040, 16662943738757120, 178381140013219840, 18013061754595573760
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OFFSET

1,2


LINKS



EXAMPLE

a(2)=2 divides the concatenated a(1)a(3)=130. a(3)=30 divides the concatenated a(2)a(4)=240. a(4)=40 divides the concatenated a(3)a(5)=30520.


CROSSREFS



KEYWORD

base,nonn


AUTHOR



EXTENSIONS



STATUS

approved



