658492

Appears in sequences

• Number of n X n nonnegative integer arrays with each row and column an ascent sequence (interior element no greater than one plus up-steps preceding it).at n=4A202544
• Number of nX5 nonnegative integer arrays each row and column an ascent sequence (interior element no greater than one plus up-steps preceding it).at n=4A202546
• T(n,k) = Number of n X k nonnegative integer arrays with each row and column an ascent sequence (interior element no greater than one plus up-steps preceding it).at n=40A202549