OFFSET
1,1
COMMENTS
Bottleneck-Monge matrices are {0,1} matrices A in which, for every i<j and k<l, max(A[i,l],A[j,k]) <= max(A[i,k],A[j,l]).
LINKS
Nathaniel Johnston, Table of n, a(n) for n = 1..400
FORMULA
a(N) = a(7, N), where a(P, N) is defined recursively in A070050.
Empirical G.f.: -x*(8192*x^13 -101240*x^12 +472850*x^11 -1238864*x^10 +2119510*x^9 -2555238*x^8 +2264076*x^7 -1508235*x^6 +762058*x^5 -290820*x^4 +82129*x^3 -16377*x^2 +2081*x -128) / ((x -1)*(2*x -1)^13). - Colin Barker, Feb 28 2013
CROSSREFS
KEYWORD
nonn
AUTHOR
Pascal Prea (pascal.prea(AT)lim.univ-mrs.fr), Apr 18 2002
EXTENSIONS
a(10) - a(25) from Nathaniel Johnston, Apr 13 2011
STATUS
approved