Search: id:A090016
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%I A090016
%S A090016 7,49,399,3689,38087,433713,5394991,72737161,1056085191,16423175153,
%T A090016 272275569167,4792916427369,89267526953479,1753598009244529,
%U A090016 36232438035285807,785431570870425353,17822981129678644871
%N A090016 Permanent of (0,1)-matrix of size n X (n+d) with d=6 and n-1 zeros not 
               on a line.
%D A090016 Brualdi, Richard A. and Ryser, Herbert J., Combinatorial Matrix Theory, 
               Cambridge NY (1991), Chapter 7.
%D A090016 Seok-Zun Song et al., Extremes of permanents of (0,1)-matrices, Lin. 
               Algebra and its Applic. 373 (2003), p. 197-210.
%F A090016 a(n) = (n+5)*a(n-1) + (n-2)*a(n-2), a(1)=7, a(2)=49
%F A090016 E.g.f.: 7*exp(-x)/(1-x)^8. - Vladeta Jovovic (vladeta(AT)eunet.rs), Mar 
               19 2004
%F A090016 a(n) = (A000166(n-1)+7*A000166(n)+21*A000166(n+1)+35*A000166(n+2)+35*A000166(n+3)+21*A000166(n+4)+7*A000166(n\
               +5)+A000166(n+6))/6!. - Vladeta Jovovic (vladeta(AT)eunet.rs), Mar 
               19 2004
%Y A090016 a(n) = A090010(n-1) + A090010(n), a(1)=7
%Y A090016 Cf. A000255, A000153, A000261, A001909, A001910, A090010, A055790, A090012-A090015.
%Y A090016 Sequence in context: A024582 A024587 A144820 this_sequence A005924 A145358 
               A125796
%Y A090016 Adjacent sequences: A090013 A090014 A090015 this_sequence A090017 A090018 
               A090019
%K A090016 nonn,easy
%O A090016 1,1
%A A090016 Jaap Spies (j.spies(AT)hccnet.nl), Dec 13 2003
%E A090016 Corrected by Jaap Spies (j.spies(AT)hccnet.nl), Jan 26 2004

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