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-21*zeta_K(-1), where K runs through the simplest cubic fields.
2

%I #6 Nov 30 2014 02:54:06

%S 1,7,21,147,1393,2569,7525,13748,30171,43491,100639,123456,224175,

%T 296991,495367,658684,1013008,1438440,1954357,2310462,3813903,4092029,

%U 5916929,6974592,10276475,10989267,14919105,21957309,26812232,36865003

%N -21*zeta_K(-1), where K runs through the simplest cubic fields.

%H Hyun Kwang Kim and Jung Soo Kim, <a href="http://dx.doi.org/10.1090/S0025-5718-02-01395-9">Evaluation of zeta function of the simplest cubic field at negative odd integers</a>, Math. Comp. 71 (2002), no. 239, 1243-1262.

%Y See A005471 for discriminants. Cf. A084719, A084734.

%K nonn

%O 1,2

%A _N. J. A. Sloane_, Jul 03 2003

%E More terms from Antonio G. Astudillo (afg_astudillo(AT)lycos.com), Jul 03 2003