A375052 - OEIS

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A375052

Number of n X 4 matrices whose values cover an initial interval of positive integers and whose rows and columns have values which are strictly increasing.

2

1, 1, 45, 4593, 732963, 155242003, 40007492715, 11910942902211, 3961395353371797, 1438326441446892453, 560815045483180502313, 231969721919492199940197, 100843924627856371008805767, 45742671500990337278105740455, 21524779658986553968372985081175

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OFFSET

0,3

COMMENTS

In other words, a(n) is the number of increasing tableaux of shape (n,n,n,n).

LINKS

Andrew Howroyd, Table of n, a(n) for n = 0..40

CROSSREFS

Column k=4 of A374985.

Sequence in context: A274603 A036521 A328356 * A384078 A093533 A101291

Adjacent sequences: A375049 A375050 A375051 * A375053 A375054 A375055

KEYWORD

nonn

AUTHOR

Andrew Howroyd, Sep 16 2024

STATUS

approved