OFFSET
0,5
COMMENTS
Given n boxes labeled 1..n, such that box i weighs i grams and can support a total weight of i grams, T(n,k) = number of ways to form a stack of boxes such that no box is squashed.
LINKS
N. J. A. Sloane and J. A. Sellers, On non-squashing partitions, Discrete Math., 294 (2005), 259-274.
EXAMPLE
Triangle begins:
1
1 1
1 2 1
1 3 3 1
1 4 6 3 0
1 5 10 7 0 0
CROSSREFS
KEYWORD
nonn,tabl
AUTHOR
N. J. A. Sloane, Dec 14 2003
STATUS
approved