Search: id:A056788
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%I A056788
%S A056788 2,5,31,283,3381,49781,870199,17600759,404197705,10387420489,
%T A056788 295311670611,9201412118867,311791207040509,11414881932150269,
%U A056788 449005897206417391,18884637964090410991,845687005960046315793
%N A056788 n^n + (n-1)^(n-1).
%C A056788 For n > 1, the absolute value of the discriminant of the polynomial x^n+x-1.
%C A056788 The largest known prime in this sequence is a(3) = 283.
%D A056788 R. P. Stanley, Enumerative Combinatorics, Cambridge, Vol. 2, 1999; see 
               equation (6.7).
%H A056788 Walter Nissen, <a href="http://upforthecount.com">Home Page</a> (listed 
               in lieu of email address)
%e A056788 a(2) = 2^2 + 3^3 = 4 + 27 = 31
%t A056788 Join[{2}, Table[n^n+(n-1)^(n-1), {n, 2, 20}]] - T. D. Noe (noe(AT)sspectra.com), 
               Aug 13 2004
%Y A056788 Cf. A000312 (n^n), A086797 (discriminant of the polynomial x^n-x-1).
%Y A056788 Sequence in context: A032112 A058009 A097396 this_sequence A091859 A085873 
               A051048
%Y A056788 Adjacent sequences: A056785 A056786 A056787 this_sequence A056789 A056790 
               A056791
%K A056788 nonn
%O A056788 1,1
%A A056788 Walter Nissen Aug 20 2000

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