login
The OEIS is supported by the many generous donors to the OEIS Foundation.

 

Logo
Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A176469 A symmetrical triangle:q=4;c(n,q)=Product[1 - q^i, {i, 1, n}];t(n,m,q)=A060187(n,m)-c(n,q)/(c(m,q)*c(n-m,q))+1 0

%I #2 Mar 30 2012 17:34:40

%S 1,1,1,1,2,1,1,3,3,1,1,-8,-126,-8,1,1,-103,-4114,-4114,-103,1,1,-642,

%T -82549,-353256,-82549,-642,1,1,-3281,-1430195,-23948889,-23948889,

%U -1430195,-3281,1,1,-15292,-23527496,-1548356796,-6216938526

%N A symmetrical triangle:q=4;c(n,q)=Product[1 - q^i, {i, 1, n}];t(n,m,q)=A060187(n,m)-c(n,q)/(c(m,q)*c(n-m,q))+1

%C Row sums are:

%C {1, 2, 4, 8, -140, -8432, -519636, -50764728, -9360737692, -3387701237632,

%C -246332974040099,...}.

%F q=4;

%F c(n,q)=Product[1 - q^i, {i, 1, n}];

%F t(n,m,q)=A060187(n,m)-c(n,q)/(c(m,q)*c(n-m,q))+1

%e {1},

%e {1, 1},

%e {1, 2, 1},

%e {1, 3, 3, 1},

%e {1, -8, -126, -8, 1},

%e {1, -103, -4114, -4114, -103, 1},

%e {1, -642, -82549, -353256, -82549, -642, 1},

%e { 1, -3281, -1430195, -23948889, -23948889, -1430195, -3281, 1},

%e {1, -15292, -23527496, -1548356796, -6216938526, -1548356796, -23527496, -15292, 1},

%e {1, -67707, -380011248, -99256044576, -1594214495286, -1594214495286, -99256044576, -380011248, -67707, 1},

%e {1, -290486, -6099252663, -6353979629820, -408235051426002, -1634139479203056, -408235051426002, -6353979629820, -6099252663, -290486, 1}

%t (*A060187*);

%t p[x_, n_] = (1 - x)^(n + 1)*Sum[(2*k + 1)^n*x^k, {k, 0, Infinity}];

%t f[n_, m_] := CoefficientList[FullSimplify[ExpandAll[p[x, n]]], x][[m + 1]];

%t c[n_, q_] = Product[1 - q^i, {i, 1, n}];

%t t[n_, m_, q_] := f[n, m] - c[n, q]/(c[m, q]*c[n - m, q]) + 1;

%t Table[Flatten[Table[Table[t[n, m, q], {m, 0, n}], {n, 0, 10}]], {q, 2, 12}]

%Y Cf. A060187

%K sign,tabl,uned

%O 0,5

%A _Roger L. Bagula_, Apr 18 2010

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recents
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy. .

Last modified September 8 22:43 EDT 2024. Contains 375759 sequences. (Running on oeis4.)