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%I #5 Mar 31 2012 10:26:07
%S 1,37,613,519018
%N Numbers equal to the sum of the squares of their duodecimal digit factorials.
%C In other words, numbers equal to the sum of the squares of factorials of their base-12 representation digits.
%D J.-M. De Koninck, Ces nombres qui nous fascinent, Entry 37, pp 15, Ellipses, Paris 2008.
%e We have, for instance, 37 = 31_(12) = (3!)^2 + (1!)^2 and 613 = 431_(12) = (4!)^2 + (3!)^2 + (1!)^2.
%Y Cf. A014080.
%K fini,full,nonn,base
%O 1,2
%A _Lekraj Beedassy_, Jul 13 2008
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