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Column 1 of triangle A113378, also equals column 0 of A113389^4.
2

%I #5 Jun 13 2017 23:23:08

%S 1,12,168,3190,80136,2553162,99579994,4624245724,250138459808,

%T 15488221792442,1082305443525010,84364431201000877,

%U 7264439969560330768,685338322012632405151,70341947440289270101707

%N Column 1 of triangle A113378, also equals column 0 of A113389^4.

%F A113378 equals the matrix cube of A113370, which has the property: column k of A113370^3 = column 0 of A113389^(3*k+1) for k>=0.

%o (PARI) a(n)=local(A,B);A=Mat(1);for(m=2,n+2,B=matrix(m,m); for(i=1,m, for(j=1,i,if(i<3 || j==i || j>m-1,B[i,j]=1,if(j==1, B[i,1]=1,B[i,j]=(A^(3*j-2))[i-j+1,1]));));A=B);(A^3)[n+2,2]

%Y Cf. A113378, A113370, A113389, A113379 (column 0).

%K nonn

%O 0,2

%A _Paul D. Hanna_, Nov 14 2005