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

0,5

Comments

Main diagonal is A081207.

Links

Table of n, a(n) for n=0..87.

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)=binomial(floor((i+j)/2, j)

Crossrefs

Sequence in context: A176353 A103691 A103441 * A333161 A156044 A180980

Adjacent sequences: A081203 A081204 A081205 * A081207 A081208 A081209

Keyword

easy,nonn,tabl

Author

Paul Barry, Mar 11 2003

Status

approved