63442

Appears in sequences

• a(n) = (10*n^3 - 9*n^2 + 2*n)/3 + 1.at n=27A034721
• The (1,1)-entry in the matrix M^n, where M is the 7 X 7 Cartan matrix [2,-1,0,0,0,0,0; -1,2,-1,0,0,0,0; 0,-1,2,-1,0,0,-1; 0,0,-1,2,-1,0,0; 0,0,0,-1,2,-1,0; 0,0,0,0,-1,2,0; 0,0,-1,0,0,0,2].at n=10A125501
• Top-left "head" entry of the n-th power of the E8 Cartan matrix.at n=10A126569
• Half the number of (n+1)X2 binary arrays with equal numbers of majority one 2X2 subblocks and majority zero 2X2 subblocks.at n=8A184459
• T(n,k)=Half the number of (n+1)X(k+1) binary arrays with equal numbers of majority one 2X2 subblocks and majority zero 2X2 subblocks.at n=36A184467