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A127186 Number of nonsingular n X n real {0,1}-matrices such that all upper left i X i submatrices are singular for i = 1..n-1. 4
0, 2, 40, 584, 1695296 (list; graph; refs; listen; history; internal format)
OFFSET

1,2

CROSSREFS

Cf. A125587, A125593, A127182, A127183, A127185, A127188, A127189.

Sequence in context: A108033 A160229 A012807 * A139747 A012637 A127429

Adjacent sequences:  A127183 A127184 A127185 * A127187 A127188 A127189

KEYWORD

nonn

AUTHOR

Artur Jasinski (grafix(AT)csl.pl), Jan 08 2007

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Last modified February 16 02:51 EST 2012. Contains 205860 sequences.