cp's OEIS Frontend

A157032 Let d(i) be the i-th digit of the decimal expansion of phi=1.6180339887498948482045868...,so that d(0) = 1, d(1) = 6, d(2) = 1, etc. Then a(0) = 1, thereafter a(n) = d(d(n)).

%I A157032 #3 Mar 30 2012 17:39:53
%S A157032 1,3,6,8,1,8,8,8,8,8,9,0,8,8,8,0,8,0,8,1,1,0,3,8,3,8,8,0,8,3,3,3,8,8,
%T A157032 6,6,9,9,1,1,8,1,8,6,9,8,8,1,3,9,3,1,8,3,1,6,8,3,0,0,8,3,1,1,9,1,3,1,
%U A157032 3,1,0,3,1,8,6,8,8,1,1,0,0,8,9,1,9,1,1,9,1,1,0,6,8,8,8,8,6,6,8,9,0,8,0,9,3
%N A157032 Let d(i) be the i-th digit of the decimal expansion of phi=1.6180339887498948482045868...,so that d(0) = 1, d(1) = 6, d(2) = 1, etc. Then a(0) = 1, thereafter a(n) = d(d(n)).
%C A157032 This defines a constant 1.368188888908880808110383880... related to Phi in a peculiar way!
%C A157032 All digits are one of the first 10 digits of Phi = A001622, so 2, 4, 5 and 7 never appear. [From _R. J. Mathar_, Mar 14 2009]
%Y A157032 Cf. A135725, A155912
%K A157032 nonn,base,easy
%O A157032 0,2
%A A157032 Dan Brown (ddbhockey(AT)hotmail.com), Feb 21 2009
%E A157032 More digits from _R. J. Mathar_, Mar 14 2009