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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

%I #5 Dec 05 2013 19:57:07

%S 1,2,30,40,520,6120,75080,821920,9125440,1012882880,11690270720,

%T 127219466240,1377297694720,14982604718080,1512710259671040,

%U 16662943738757120,178381140013219840,18013061754595573760

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

%e 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.

%Y Cf. A113696.

%K base,nonn

%O 1,2

%A _Amarnath Murthy_, Nov 11 2005

%E Corrected and extended by _R. J. Mathar_, Aug 31 2007

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Last modified May 7 13:48 EDT 2024. Contains 372303 sequences. (Running on oeis4.)