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A081206 Correlation matrix of triangle A046854. 1
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 (list; table; graph; refs; listen; history; text; internal format)
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

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Last modified December 1 01:37 EST 2021. Contains 349426 sequences. (Running on oeis4.)