A193380 - OEIS

A193380

A192392(n)/n = largest m such that m*n is a concatenation of the numbers n(n-1)/2+1,...,n(n+1)/2.

%I #8 Oct 26 2012 10:21:35

%S 1,16,218,24277,282624223,35336530286,4038946460332,454417916411629,

%T 50493713793377093,5554535251494847465,605967851146914507796,

%U 65648063122810597558064,7069922221437372952524460,714212835424956578936007364364293

%N A192392(n)/n = largest m such that m*n is a concatenation of the numbers n(n-1)/2+1,...,n(n+1)/2.

%F a(n) = A192392(n)/n.

%o (PARI) a(n) = A192392(n)/n /* see there */

%Y Cf. A076068 - A076073, A080479, A080480, A192392.

%K nonn,base

%O 1,2

%A _M. F. Hasler_, Jul 24 2011