A069544 - OEIS

%I #9 May 13 2018 19:53:54

%S 1,2,43,2,163,2,3,1,1,2,5,1,2,3,80,2,5,2,1,1,1,33,1,1,53,1,1,1,1,1,1,

%T 6,1,1,2,2,1,1,239,1,3,31,1,1,11,1,13,123,2,2,2,2,13,15,1,2,3,3,1,3,1,

%U 1,6,1,3,1,1,13,8,1,7,1,2,1,8,7,1,17,1,6,1,1,3,1,1,13,1,1,4,2,9,124

%N Continued fraction for Feigenbaum's constant - 4 = 0.6692...

%C This sequence should have offset 1, since the first term already corresponds to the fractional and not to the integer part. See A159766 for a better variant. - _M. F. Hasler_, Apr 30 2018

%H Robert G. Wilson v, <a href="/A069544/b069544.txt">Table of n, a(n) for n = 0..952</a>

%H David Broadhurst, <a href="http://www.plouffe.fr/simon/constants/feigenbaum.txt">1019 decimal digits of Feigenbaum's delta</a>. Correspondence to Simon Plouffe and others, 22-Mar-1999.

%F delta - 4 = 1/( 1 + 1/( 2 + 1/( 43 + 1/( 2 + 1/( 163 + ... ))))) = 0.66920160910... - _M. F. Hasler_, Apr 30 2018

%o (PARI) default(realprecision,999);{/*paste here delta=... from the Broadhurst link*/};contfrac(delta)[^1] \\ _M. F. Hasler_, Apr 30 2018

%Y Cf. A159766 (continued fraction of delta), A006890 (decimal expansion).

%K cofr,nonn

%O 0,2

%A Christopher Lund (clund(AT)san.rr.com), Apr 17 2002