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%I #13 Feb 26 2024 01:56:54
%S 263514,513642,263514,513642,263514,513642,263514,513642,263514,
%T 513642,263514,513642,263514,513642,263514,513642,263514,513642,
%U 263514,513642,263514,513642,263514,513642,263514,513642,263514,513642,263514,513642
%N The n-th digit of a(n-1) gives the position of digit n in a(n), a(1)=263514.
%C Sequence is periodic with period 2. - _Charles R Greathouse IV_, Jul 27 2009
%H A. Frank & P. Jacqueroux, <a href="https://paulcooijmans.com/others/intcontest.pdf">International Contest</a>, 2001. Item 29
%H <a href="/index/Rec#order_02">Index entries for linear recurrences with constant coefficients</a>, signature (0, 1).
%e Since a(1)=263514, the '2'nd digit of a(2) is 1, the '6'th digit is 2, the '3'rd digit is 3, the '5'th digit 4, the '1'st digit is 5 and the '4'th digit is 6.
%t LinearRecurrence[{0, 1},{263514, 513642},30] (* _Ray Chandler_, Aug 25 2015 *)
%Y Cf. A123155.
%K nonn,base
%O 1,1
%A Herman Jamke (hermanjamke(AT)fastmail.fm), Sep 30 2006