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0,1
This is the square root of the inverse of the plastic number A060006: 1.32471795724...
This is the positive root of x^6 + x^4 - 1 = 0 and the square root of A075778.
Table of n, a(n) for n=0..85.
Wikipedia, Plastic number
0.8688369618327093091281...
RealDigits[x/.FindRoot[x^6+x^4==1, {x, .8}, WorkingPrecision->120]][[1]] (* Harvey P. Dale, Jan 17 2014 *)
Cf. A000931, A060006.
Sequence in context: A159627 A011298 A188655 * A247559 A246768 A088541
Adjacent sequences: A191906 A191907 A191908 * A191910 A191911 A191912
nonn,cons
Fabrice Auzanneau, Jun 19 2011
approved