

A144197


Square array 7 x 7 read by rows.


2



0, 0, 0, 0, 0, 0, 1, 0, 1, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 1, 0, 1, 0, 0, 0, 0, 0, 0
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OFFSET

1,1


COMMENTS

Permutation contributing to the determinant that gives the 7th value of the MÃ¶bius function. Determinant of matrix is equal to 1. The array is symmetrical.


LINKS

Table of n, a(n) for n=1..49.
Herbert S. Wilf, The Redheffer matrix of a partially ordered set, arXiv:math/0408263 [math.CO], 2004.


EXAMPLE

The array is:
0,0,0,0,0,0,1
0,1,0,0,0,0,0
0,0,1,0,0,0,0
0,0,0,1,0,0,0
0,0,0,0,1,0,0
0,0,0,0,0,1,0
1,0,0,0,0,0,0


CROSSREFS

Cf. A143104, A002033, A144196, A144198.
Sequence in context: A011690 A341994 A011688 * A295875 A011676 A277147
Adjacent sequences: A144194 A144195 A144196 * A144198 A144199 A144200


KEYWORD

fini,full,nonn,tabf


AUTHOR

Mats Granvik, Sep 13 2008


STATUS

approved



