A081206 Correlation matrix of triangle A046854.

1, 1, 1, 1, 2, 1, 1, 2, 2, 1, 1, 3, 3, 3, 1, 1, 3, 4, 4, 3, 1, 1, 4, 6, 7, 6, 4, 1, 1, 4, 7, 9, 9, 7, 4, 1, 1, 5, 10, 14, 16, 14, 10, 5, 1, 1, 5, 11, 17, 21, 21, 17, 11, 5, 1, 1, 6, 15, 25, 34, 37, 34, 25, 15, 6, 1, 1, 6, 16, 29, 42, 50, 50, 42, 29, 16, 6, 1, 1, 7, 21, 41, 64, 82, 89, 82, 64, 41

Offset: 0

Author

Paul Barry, Mar 11 2003

Keywords

• easy
• nonn
• tabl

Comments

Main diagonal is A081207.

Formula

As a square array, defined by T1(i, j) = Sum_{k=0..min(i, j)} T(i, k)*T(j, k), T(i, j)=A046854(i, j)=binomial(floor((i+j)/2), j).