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!)
A269302 Normalization coefficients for quantum Pascal's pyramid, denominators of: T(n,k,m) = ((n - m)! m!)/(2^n (n - k)! k!). 2

%I #17 Apr 17 2016 08:56:55

%S 1,2,2,2,2,4,8,4,2,4,2,4,8,4,8,24,24,8,8,8,8,8,8,8,8,8,8,24,24,8,16,

%T 64,96,64,16,4,16,24,16,4,8,32,16,32,8,4,16,24,16,4,16,64,96,64,16,32,

%U 160,320,320,160,32,32,32,64,64,32,32,16,16,32,32,16,16,16,16,32,32,16,16,32,32,64,64,32,32,32,160,320,320,160,32

%N Normalization coefficients for quantum Pascal's pyramid, denominators of: T(n,k,m) = ((n - m)! m!)/(2^n (n - k)! k!).

%C Read by block by row, i.e., a( x(n,k,m) ) have x(n,k,m) = ( sum_{i=0}^n i^2 ) + k ( n + 1 ) + m and (n,k,m) >= 0. See comments in A268533 for relevance.

%F T(n,k,m) = Denominator[((n - m)! m!)/(2^n (n - k)! k!)]

%e First few blocks:

%e 1

%e . . 2, 2

%e . . 2, 2

%e . . . . . 4, 8, 4

%e . . . . . 2, 4, 2

%e . . . . . 4, 8, 4

%t NormFrac[Block_] :=

%t Outer[Function[{n, k, m}, ((n - m)! m!)/(2^n (n - k)! k!)][

%t Block, #1, #2] &, Range[0, Block], Range[0, Block], 1]; Flatten[

%t Denominator[NormFrac[#]] & /@ Range[0, 5]]

%Y Numerators: A269301. Cf. A268533.

%K nonn,frac

%O 0,2

%A _Bradley Klee_, Feb 22 2016

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 April 24 08:21 EDT 2024. Contains 371926 sequences. (Running on oeis4.)