This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.
%I A269301 #17 Dec 10 2016 19:41:38
%S A269301 1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,3,1,1,3,3,1,1,3,1,1,1,1,1,1,1,1,
%T A269301 1,1,1,1,1,1,3,3,1,3,3,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,5,1,1,1,1,5,5,
%U A269301 1,1,1,1,5,5,1,1,1,1,5,5,1,1,1,1,5,1,1,1,1,1,1
%N A269301 Normalization coefficients for quantum Pascal's pyramid, numerators of: T(n,k,m) = ((n - m)! m!)/(2^n (n - k)! k!).
%C A269301 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 A269301 T(n,k,m) = Numerator[((n - m)! m!)/(2^n (n - k)! k!)]
%e A269301 First nontrivial block:
%e A269301 1, 1, 1, 1
%e A269301 3, 1, 1, 3
%e A269301 3, 1, 1, 3
%e A269301 1, 1, 1, 1
%t A269301 NormFrac[Block_] :=
%t A269301 Outer[Function[{n, k, m}, ((n - m)! m!)/(2^n (n - k)! k!)][
%t A269301 Block, #1, #2] &, Range[0, Block], Range[0, Block], 1]; Flatten[
%t A269301 Numerator[NormFrac[#]] & /@ Range[0, 5]]
%Y A269301 Denominators: A269302. Cf. A268533.
%K A269301 nonn,frac
%O A269301 0,19
%A A269301 _Bradley Klee_, Feb 22 2016