A246123 - OEIS

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A246123

Number of inequivalent n X n matrices with entries from [7], where equivalence means permutations of rows or columns or the symbol set.

2

1, 1, 9, 773, 12872565, 18591188894392, 1015303397880332132695, 2006943506669869627232430791792, 148870004307406359229098552180494085417700, 427548526344388851318876075291587420840143834762159765

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OFFSET

0,3

LINKS

Table of n, a(n) for n=0..9.

Index to number of inequivalent matrices modulo permutation of rows and columns

CROSSREFS

Column k=7 of A242095.

Sequence in context: A124417 A265463 A159356 * A246124 A223380 A246125

Adjacent sequences: A246120 A246121 A246122 * A246124 A246125 A246126

KEYWORD

nonn

AUTHOR

Alois P. Heinz, Aug 15 2014

STATUS

approved