A144193 Square array (5 X 5) read by rows.

0, 0, 0, 0, 1, 0, 1, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 1, 0, 1, 0, 0, 0, 0

Offset

1,1

Comments

Permutation contributing to the determinant that gives the 5th value of the moebius function. Determinant of matrix is equal to -1. The array is symmetrical.

Links

Table of n, a(n) for n=1..25.

J. Davies, Permutation Calculator

Herbert S. Wilf, The Redheffer matrix of a partially ordered set, arXiv:math/0408263 [math.CO], 2004.

Example

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

Crossrefs

Cf. A143104, A002033.

Sequence in context: A094091 A080679 A353464 * A171387 A355450 A333189

Adjacent sequences: A144190 A144191 A144192 * A144194 A144195 A144196

Keyword

fini,full,nonn,tabf

Author

Mats Granvik, Sep 13 2008

Status

approved