155488

Appears in sequences

• Number of different values obtained by evaluating all different parenthesizations of 1/2/3/4/.../n.at n=23A078389
• Number of (n+1) X (1+1) 0..5 arrays with every 2 X 2 subblock having the sum of the squares of all six edge and diagonal differences equal to 11.at n=5A233811
• Number of (n+1)X(6+1) 0..5 arrays with every 2X2 subblock having the sum of the squares of all six edge and diagonal differences equal to 11.at n=0A233816
• T(n,k)=Number of (n+1)X(k+1) 0..5 arrays with every 2X2 subblock having the sum of the squares of all six edge and diagonal differences equal to 11 (11 maximizes T(1,1)).at n=15A233818
• T(n,k)=Number of (n+1)X(k+1) 0..5 arrays with every 2X2 subblock having the sum of the squares of all six edge and diagonal differences equal to 11 (11 maximizes T(1,1)).at n=20A233818
• a(0)=3; thereafter a(n) = 20*6^(n-1)-2^(n-1).at n=6A321002