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A098926 Permanent of the (0,1)-matrix with ij-th entry equal to zero iff (i=1,j=1),(i=1,j=2),(i=1,j=3),(i=2,j=3),(i=3,j=3),... In other words, the ij-th entry of the matrix is zero iff it is on the path which start from the entry (i=1,j=1) and moves in the matrix alternating 3 steps to the right to 3 steps to the left. +0
1
0, 2, 12, 90, 556, 5242, 42380, 479306 (list; graph; listen)
OFFSET

3,2

CROSSREFS

Sequence in context: A143923 A079858 A121357 this_sequence A074610 A155639 A103882

Adjacent sequences: A098923 A098924 A098925 this_sequence A098927 A098928 A098929

KEYWORD

nonn

AUTHOR

Simone Severini (ss54(AT)york.ac.uk), Oct 19 2004

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Last modified November 27 22:38 EST 2009. Contains 167602 sequences.


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