%I A129549
%S A129549 1,3,20,78,352,1365,5232,18271,60598,187296,548020,1515265,3991204,
%T A129549 10035401,24210308,56188768,125904351,273044682,574635828,1176027747,
%U A129549 2345376048,4565886531,8691118644,16198834634,29602895824,53105875363
%N A129549 Measures of entanglement in 4-qbits.
%D A129549 David Meyer and Nolan Wallach, Invariants for multiple qubits: the case 
               of 3 qubits, Mathematics of quantum computing, Computational Mathematics 
               Series, 77-98, Chapman&Hall/CRC, 2002.
%D A129549 Nolan Wallach, The Hilbert sereies of measures of entanglement for 4 
               q-bits, Acta Appl. Math. 86(2005),203-220.
%F A129549 G.f.: (P(q) + q^54*P(1/q))/((1 - q^2)^3*(1 - q^4)^11*(1 - q^6)^6) where 
               P(q) = 1 + 3*q^4 + 20*q^6 + 76*q^8 + 219*q^10 + 654*q^12 + 1539*q^14 
               + 3119*q^16 + 5660*q^18 + 9157*q^20 + 12876*q^22 + 16177*q^24 + 18275*q^26
%Y A129549 Cf. A000217, A129548.
%Y A129549 Sequence in context: A067600 A160456 A006411 this_sequence A092786 A015529 
               A000948
%Y A129549 Adjacent sequences: A129546 A129547 A129548 this_sequence A129550 A129551 
               A129552
%K A129549 nonn
%O A129549 1,2
%A A129549 Mike Zabrocki (zabrocki(AT)mathstat.yorku.ca), Apr 20 2007