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A006831 From fundamental unit of Z[ (-n)^{1/4} ].
(Formerly M0204)

%I M0204

%S 1,-1,0,0,2,2,1,-66,-3,6,1,-10,-2,4,51,-1,11512,4956000,0,8,81146,

%T 1629810,-3,-281,-13,-126466,7,-39122,2218,217672,663,-6,-4,-6768,65,

%U -6356,-54441051012990,-68,-29

%N From fundamental unit of Z[ (-n)^{1/4} ].

%D N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence).

%H J. Buchmann, <a href="https://doi.org/10.1090/S0025-5718-1987-0866097-1">The computation of the fundamental unit of totally complex quartic orders</a>, Math. Comp. 48 (1987), 39-54.

%Y Cf. A006828, A006829, A006830.

%K sign

%O 1,5

%A _N. J. A. Sloane_.

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Last modified March 21 04:59 EDT 2019. Contains 321364 sequences. (Running on oeis4.)