Search: id:A089480
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%I A089480
%S A089480 1,6,150,6,18,13032,1440,4992,672,1440,288,576,0,24,0,96,3513720,693840,
%T A089480 2626800,604200,1451400,468000,962400,252000,425400,190800,379200,97200,
%U A089480 205440,100800,132000,28800,108000,28800,44400,33600,61200,9600,14400,
               0
%N A089480 Triangle T(n,k) read by rows, where T(n,k) = number of times the permanent 
               of a real nonsingular n X n (0,1)-matrix takes the value k, for n 
               >= 1, 1 <= k <= A000255(n).
%C A089480 This sequence was first provided by Jaap Spies (j.spies(AT)hccnet.nl).
%Y A089480 T(n, A000255(n)) = A052655(n). The n-th row of the table contains A089475(n) 
               nonzero entries. Cf. A089479 occurrence counts for permanents of 
               all (0, 1)-matrices, A089481 occurrence counts for permanents of 
               singular (0, 1)-matrices.
%Y A089480 Sequence in context: A099185 A065986 A012791 this_sequence A056427 A056418 
               A070025
%Y A089480 Adjacent sequences: A089477 A089478 A089479 this_sequence A089481 A089482 
               A089483
%K A089480 nonn,tabf
%O A089480 1,2
%A A089480 Hugo Pfoertner (hugo(AT)pfoertner.org), Nov 04 2003

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